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1951.

Solve : I want to look at the source code for calculator.?

Answer»

...for windows. Can I do this? I'm curious to see what it looks like. But, don't I have to download a special program to view this code?Quote from: Doug on April 26, 2010, 09:00:10 PM

...for windows. Can I do this? I'm curious to see what it looks like. But, don't I have to download a special program to view this code?

You can't view the source code. but you can dissassemble it.

Calculator, like most of windows, was written in C/C++; the C/C++ is translated to machine code by the compiler; all that is left in the result is machine code, no trace of the source. If you REALLY want to see the source you could try to get a development job WORKING at Microsoft.

The nest best thing is the disassemble it.

while debug is included with most Windows installations, I was unable to automate the disassembly and make it display the whole problem. a better idea is to download the windows SDK (don't worry, that one will still work with XP) and use the "dumpbin" tool.

Once you have it installed, issue the following command at the prompt:

Code: [Select]dumpbin /disasm %systemroot%\system32\calc.exe >> calc.asm
this will dissassemble the file to calc.asm. you can now peruse calc.asm at your leisure, but unless you have some experience with assembly it will just look like a mash of numbers and a few instruction names.








Quote from: Doug on April 26, 2010, 09:00:10 PM
...for windows. Can I do this? I'm curious to see what it looks like. But, don't I have to download a special program to view this code?
calc.exe is closed source. you can't really look at it. A calculator can be easily done with a programming language. Most programming language already is capable of doing maths. What you just need is to learn how to do up the GUI INTERFACE. Then tie each button you create to do arithmetic at the back end.

here's something. try to turn HTML into vb.
go to javascriptkit.com and look for graphical calculatorIt's quickly gotten over my head. I was hoping by seeing something small and simple like calculator that maybe I could get some insight into windows. There was a learning version of calc that looked like calc. It was bundled with a version of Visual Basic.

Here is one that looks like how I remember it.
http://groups.engin.umd.umich.edu/CIS/course.des/cis400/vbasic/vbcalc.html
Discussion
1952.

Solve : Please, help me with OpenGL and textures...?

Answer»

This C++ OPENGL program: texture.zip should DRAW a texture, but all I get is a white rectangle. What am I doing wrong? Thanks.Nevermind, I figured it out.
Discussion
1953.

Solve : Visual C#: Can't figure out array of picture boxes!?

Answer»

I've been trying to figure this out for days and can't get it. I've tried looking up on google how to do it but nonetheless, I can't seem to find a solution that works.

I'm USING Visual Studio 2008, and trying to make an array to control a bunch of picture boxes. I have plans to use this method of controlling the picture boxes using an array for a game DESIGN (Tetris for example). But I don't want any code for tetris or any game right now! My main and only priority that I can't figure out right now is declaring and using an array which I can store picture boxes in. I'm fairly new at C# and crossed over from java (school course instructed) and have a smaller background in Visual Basic. So I'm pretty new.

To create the array I use Code: [Select]int[] pictureBoxes = new int[4]; but then later when I try and declare the array as a picture box Code: [Select]pictureBoxes[0] = new PictureBox(); I get the error that pictureboxes cannot IMPLICITLY be converted to int.

Can anyone help me out? Possibly supply me with working code for Visual Studio 2008 C# that will create an array of pictureboxes so I can CHECK my code with it and see what I'm doing WRONG?Nevermind! I finally found what I'm doing wrong! In case anyone was wondering...
What I should have done was:
Code: [Select]PictureBox[] pictureBoxes = new PictureBox[4]and when actually creating a new PictureBox for that array place, I needed to put
Code: [Select]pictureBoxes[0] = new PictureBox();Thanks anyways though =)
Discussion
1954.

Solve : Help with some questions about batch/vbs.?

Answer»

Hello everyone!

I used the search function and found nothing on this question at hand.

I am WRITING a batchfile for a professor of mine at dunwoody.
The purpose of the bat is to take a data file, containing students emails/Firstname Lastname, and make directories for each student in a parent directory.
But the PROBLEM is the data file format is really gross. Its being taken from our intranetwork site, which displays the text as follows.

[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);

[emailprotected](James Smith);[emailprotected](James Smith);

[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);

and for the script to work the "[emailprotected](James Smith);" needs to be on separate lines like:
[emailprotected](James Smith);
[emailprotected](James Smith);

so here's the question -- how do you parse/format the data file within the batch file? Do i need the batch to call a vbs?
you can email me at @[emailprotected] or pm me on here.

All help is appreciated.

Thank you
The_Valkyrie so 34+ views and no help................... Why don't you post the batch file so that someone can look at it for you?::!--------------------------------------------------------------------------!
::!--------------------------------------------------------------------------!
::Batchfile : allomk
::Purpose : Create Firstname_Lastname folders of students for Teacher.
::OS tested : WinXp
::Created by : Ben Jorgenson [emailprotected]
::Adopted by : Brian Carlson
::Revised :
::Version : v1.1
::!--------------------------------------------------------------------------!
::!--------------------------------------------------------------------------!
@echo off
set /p course="What's the Course Number? "
echo.
set /p section="What's the Course Section Number? "
if exist C:\test\CNTS%course%-%section% (
echo Making the Student's Folders.....
) else (
Echo Making the Course\Section Folder.....
mkdir C:\test\CNTS%course%-%section%
)
if %section%==01 goto section1
if %section%==02 goto section2
goto :eof
pause
:section1
for /f "tokens=1-3 delims=() " %%a in (C:\Studentnames\student_name.txt) do @mkdir "C:\test\CNTS%course%-01\%%b_%%c"
exit /b

:section2
for /f "tokens=1-3 delims=() " %%a in (C:\Studentnames\student_name.txt) do @mkdir "C:\test\CNTS%course%-02\%%b_%%c"
exit /b

:students
:: Use the data list for the student names
Echo its workign muahahaha!
exit /b






But the bat works, i would like to know if the bat can parse data files.I'm not UNDERSTANDING the question. The batch file does not SEEM to match your original post.

Quote

[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);

[emailprotected](James Smith);[emailprotected](James Smith);

[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);[emailprotected](James Smith);

You can use this little script to extract the student names from your data file: (just don't tell me all the students are named James Smith)

Code: [Select]Const ForReading = 1
Const ForWriting = 2

Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("C:\temp\ch.txt", ForReading) 'Change input file label
Set objRegEx = CreateObject("VBScript.RegExp")

objRegEx.Global = True
objRegEx.Pattern = "\(+[A-Za-z ]+\);"

strSearchString = objFile.ReadAll
objFile.Close

Set objFile = objFSO.OpenTextFile("c:\temp\Test.txt", ForWriting, True) 'Change output file label
Set colMatches = objRegEx.Execute(strSearchString)
If colMatches.Count > 0 Then
For Each strMatch in colMatches
objFile.Write Mid(strMatch.Value, 2, Len(strMatch.Value)-3) & vbCrLf
Next
End If
objFile.Close

If you need the email address, the regex pattern can be tweaked. Batch code has the findstr command but the regex options are limited although the one in the script is about as simple as they come. Save the script with a vbs extension and run from either the command prompt or within a batch file as:
cscript //nologo scriptname.vbs

Good luck. Quote from: The_Valkyrie on APRIL 29, 2010, 06:59:01 AM
so 34+ views and no help...................

This kind of post is, in general, a bad idea.Quote from: Sidewinder on April 29, 2010, 11:15:24 AM
I'm not understanding the question. The batch file does not seem to match your original post.
The bat has been tweaked out of boredom, but the original script is:
for /f "tokens=1-3 delims=() usebackq" %%a in ("%userprofile%\Desktop\student_name.txt") do @mkdir C:\test\%%b_%%c

This allowed me to take the formatted file and create the folders. But thank you tons Sidewinder. (haha and no, all the students are not named "James Smith")
Discussion
1955.

Solve : Calling user input results in vbs??

Answer»

Hi, I'm making a web 'client' through vbs, but i'm having problems with the code syntax. Here's the code:
Code: [Select]set Window = CreateObject("InternetExplorer.Application")

Function myFunction()
fname=InputBox("Enter Website address","Userinput")
fmane=InputBox("Enter WIDTH (Max = 1024)","Userinput")
fmene=InputBox("Enter Height (Max = 768)","Userinput")
END Function


Window.RegisterAsBrowser = True
Window.Navigate("") ' Inputbox fname
Window.MenuBar = False
Window.ToolBar = False
Window.AddressBar = False
Window.StatusBar = False
Window.FullScreen = False
Window.Resizable = False
Window.Visible = True
Window.Width = ' Inputbox fmane
Window.Heigh = ' Inputbox fmene
Window.Left = 0
Window.Top = 0Would I have to separate the inputbox's into different functions? and how is the syntax (where noted) used?
Thanks for any time spent answering.I took the LIBERTY of moving the visible property to the end. It's better to have all the window properties established before showing the IE window.

Code: [Select]Set Window = CreateObject("InternetExplorer.Application")

Window.RegisterAsBrowser = True
Window.Navigate(InputBox("Enter Website address","User Input"))
Window.MenuBar = False
Window.ToolBar = False
Window.AddressBar = False
Window.StatusBar = False
Window.FullScreen = False
Window.Resizable = False
Window.Width = InputBox("Enter Width (Max = 1024)","User Input")
Window.Height = InputBox("Enter Height (Max = 768)","User Input")
Window.Left = 0
Window.Top = 0
Window.Visible = True

Good luck.
Discussion
1956.

Solve : Get open windows vb?

Answer»

I need help. please tell me an api to get all open windows. it is urgent(not really)

EnumWindows()i use vb 2008 express
and i really dont have xp i got a new computerQuote from: glaba on April 28, 2010, 04:45:12 PM

i use vb 2008 express
and i really dont have xp i got a new computer
Quote from: BC_Programmer on April 28, 2010, 04:43:13 PM
EnumWindows()
it does NOT workQuote from: glaba on April 28, 2010, 04:49:30 PM
it does NOT work


works fine for me.
Code: [Select]Module Module1
Delegate Function EnumWindowsProc(ByVal HWND As Integer, ByVal lParam As Integer) As Integer
PRIVATE Declare Function EnumWindows Lib "user32.dll" (ByVal lpEnumFunc As EnumWindowsProc, ByVal lParam As Int32) As Int32
Private Declare Function GetWindowTextAPI Lib "user32.dll" Alias "GetWindowTextA" (ByVal hwnd As Int32, ByVal lpString As String, ByVal cch As Int32) As Int32

Private mPendingList As List(Of Integer)
Private Function EnumWnd(ByVal hWnd As Integer, ByVal lParam As Integer)
mPendingList.Add(hWnd)
Return 1
End Function
Public Function GetTopLevelWindows() As List(Of Integer)
mPendingList = New List(Of Integer)
CALL EnumWindows(New EnumWindowsProc(AddressOf EnumWnd), 0)

Return mPendingList


End Function
Private Function GetWindowText(ByVal hwnd As Int32) As String
Dim retstring As String = Space$(32768)
GetWindowTextAPI(hwnd, retstring, Len(retstring))
Return retstring.Replace(vbNullChar, "").Trim()
End Function
Sub MAIN()
Dim windowhandles As List(Of Integer) = GetTopLevelWindows()
Dim currtitle As String
For Each currhandle As Integer In windowhandles
currtitle = GetWindowText(currhandle)
If currtitle.Length > 0 Then
Console.WriteLine(currtitle)
Debug.Print(currtitle)
End If

Next
End Sub

End Module






Edited- added FindWindowsLike() and FindWindowsLikeRegExp()...

Code: [Select]Imports System.Text.RegularExpressions

Module Module1

Delegate Function EnumWindowsProc(ByVal hWnd As Integer, ByVal lParam As Integer) As Integer
Private Declare Function EnumWindows Lib "user32.dll" (ByVal lpEnumFunc As EnumWindowsProc, ByVal lParam As Int32) As Int32
Private Declare Function GetWindowTextAPI Lib "user32.dll" Alias "GetWindowTextA" (ByVal hwnd As Int32, ByVal lpString As String, ByVal cch As Int32) As Int32
Private Declare Function GetParent Lib "user32.dll" (ByVal hwnd As Int32) As Int32
Private Declare Function GetDesktopWindow Lib "user32.dll" () As Int32

Private mPendingList As List(Of Integer)
Private Function EnumWnd(ByVal hWnd As Integer, ByVal lParam As Integer)
If lParam <> 0 Then
If IsTopLevelWindow(hWnd) Then
mPendingList.Add(hWnd)
End If
Else
mPendingList.Add(hWnd)
End If
Return 1
End Function
Private Function IsTopLevelWindow(ByVal HwndTest As Long) As Boolean
Return GetParent(HwndTest) = 0 OrElse GetParent(HwndTest) = GetDesktopWindow()
End Function
Public Function GetTopLevelWindows(Optional ByVal OnlyTopMost As Boolean = True) As List(Of Integer)
mPendingList = New List(Of Integer)
Call EnumWindows(New EnumWindowsProc(AddressOf EnumWnd), OnlyTopMost)




Return mPendingList


End Function
Private Function GetWindowText(ByVal hwnd As Int32) As String
Dim retstring As String = Space$(32768)
GetWindowTextAPI(hwnd, retstring, Len(retstring))
Return retstring.Replace(vbNullChar, "").Trim()
End Function
Public Function FindWindowsLike(ByVal LikeString As String, Optional ByVal OnlyTopMost As Boolean = False) As List(Of String)
Dim foundwindows As List(Of Integer) = GetTopLevelWindows(OnlyTopMost)
Dim loopwindow As Int32, wndtext As String

Dim returntitles As New List(Of String)


For Each loopwindow In foundwindows
wndtext = GetWindowText(loopwindow)

If wndtext Like LikeString Then
returntitles.Add(wndtext)
End If
Next


Return returntitles

End Function
Public Function FindWindowsLikeRegExp(ByVal LikeString As String, Optional ByVal regexoptions As RegexOptions = Text.RegularExpressions.RegexOptions.IgnoreCase, _
Optional ByVal OnlyTopMost As Boolean = False) As List(Of String)
Dim foundwindows As List(Of Integer) = GetTopLevelWindows(OnlyTopMost)
Dim loopwindow As Int32, wndtext As String
Dim usereg As Regex
Dim returntitles As New List(Of String)
usereg = New Regex(LikeString)

For Each loopwindow In foundwindows
wndtext = GetWindowText(loopwindow)
If usereg.Matches(wndtext).Count > 0 Then
returntitles.Add(wndtext)
End If
Next


Return returntitles

End Function

Sub Main()
Dim windowhandles As List(Of Integer) = GetTopLevelWindows(True)
Dim currtitle As String
Console.WriteLine("Enumerating all top-level windows...")
For Each currhandle As Integer In windowhandles
currtitle = GetWindowText(currhandle)
If currtitle.Length > 0 Then
Console.WriteLine(currtitle)
Debug.Print(currtitle)
End If

Next

Console.WriteLine("finding windows like ""A*""...")
Dim windowslike As List(Of String) = FindWindowsLike("A*", True)
Console.WriteLine("Found " + Str(windowslike.Count) + " matching items...")
For Each LoopTitle As String In windowslike
Debug.Print(LoopTitle)
Console.WriteLine(LoopTitle)



Next
End Sub

End Module
Discussion
1957.

Solve : findwindowlike vb 2008?

Answer»

how do i USE findwindowlike in a recent version of vb
Quote from: glaba on APRIL 28, 2010, 04:50:37 PM

how do i use findwindowlike in a recent version of vb


stick to a single THREAD on this subject please.
Discussion
1958.

Solve : Hate?

Answer»

Just would like to SAY I hate programming because:

- I have to go ask help to programmers which are in general, well, **** (cussword not allowed).
- IRC is full off ******** who don't respect you and who refuse to help you because they are so elite and because I ask such 'stupid' questions

*CENSORED* egotrippers.

Anyway
And the point of this is what?It's a privilege to write in these forums, not a right.
Be rude and you will lose that privilege.

If you don't want to submit a comment, then don't.
This one's just for you.

[recovering disk space - old attachment deleted by admin]404 not found.Quote from: Treval on April 14, 2010, 02:11:16 PM

Just would like to say I hate programming because:

- I have to go ask help to programmers which are in general, well, **** (cussword not allowed).
- IRC is full off ******** who don't respect you and who refuse to help you because they are so elite and because I ask such 'stupid' questions

*censored* egotrippers.

Anyway


Well...
If you don't like doing that, then I would suggest that you buy some books. Better yet, take some classes.

Good luck!JJ, I've already studied 5,5 years of programming and my closet is filled with fat 600 page books on programming from top to bottom.

I'll just review them. =)
Problem is time. ^^
Yes, time.

Have to make a game and 2 months left.
Huge stress.

Got to make analysis charts, plan stuff, make OO classes, qsmkfdjqsmldfjqlkmsjfskljf.

k.

Actually, to help you understand my frustration, let me just illustrate this:

Imagine if you had any QUESTION or problem with your studies and everyone you asked,
co-students included, tells you to go f* yourself and that you ask dumb questions.
How would you feel, all alone, frustrated on your heaps of debugging errors?

Yeah.

Quote
Imagine if you had any question or problem with your studies and everyone you asked,
co-students included, tells you to go f* yourself and that you ask dumb questions.

Even your teachers?
What SCHOOL is that?Well, the professors generally don't answer to my questions on the college forums.
I was lucky once, last year, a prof who was really interested in what he taught.
He even wrote a book on programming.
He answered most of my questions.

This happens in some colleges.
You post on the forum, you wait. No one answers, no one cares.
Well, the profs generally don't have the patience to go figure out some debugging that you should do in the end. rofl...
Also the co-students: very selfish. Ever been in a all-math-people class? Those are some real arrogant ego-people.
I'm also referring to IRC.Quote from: Treval on April 14, 2010, 03:34:21 PM
Well, the professors generally don't answer to my questions on the college forums.

Well, the profs generally don't have the patience time to go figure out some debugging that you should do in the end. rofl...
You really take your teahers for granted, don't you? How many students do you think your teachers have daily? I am in highschool, where I bet they have smaller classes than yours, my teachers have about 100-120 students. So, think about how long it would take to mark all that homework? Teachers don't often have free time, be thankful some take the time to ASSIST a few people with their issues. And if someone has an obvious issue, it takes ten seconds (or less) to type out:
Your program has issues at lines 1, 27, and 35. Programming is not that easy. It often involves deep rooted, sequential, layered logical errors. Especially in big programs. =PTreval, you seem to be tied up in many languages. How about sticking to just one for a while, like the one you're writing your assignment in. When you have free time, continue expanding your knowledge of only one.

If it bothers you that much, as it seems to be indicated in other threads you've posted, then it's not worth it.. This topic was named, "HATE", for crying outloud..Rofl. Yeah.
I'm sticking to one language though.. which is C# and the XNA Framework.
It's just frustrating that one has to deal with his own problems of programming.

You know what, the guys over at medicine (the doctors, yeah) they are the luckiest.
If you see their discussion boards, it's filled with information and essays and everything,
of thousands of contributing students. I just happen to be in the 'asocial outcasts' sector. Rofl.

I'm just frustrated also because I've forgotten like 90% of C# which is a painnnnnnnnn
and I have to master a new framework in a very short amount of time (2 months left).
I'm going crazy every day (ok not every day lol).

Anyway, I guess I'll just start reading my book again and read up on as much info as I possibly can.
There's a lot of hard work ahead..
(Also frustrating is working on something as simple as a self-made dialog box system (yeah it's harder than it sounds) and being stuck on it for an entire week (which is pretty much untolerable for project progress)).

I'm gonna do my best!!!

lol.
Quote from: Treval on April 14, 2010, 04:56:30 PM


I've forgotten like 90% of C# which is a painnnnnnnnn


Because your trying to learn too many things.. cut back


When I learn, I stick to a schedule, although I deviate from that schedule at times, because my curiosity cannot resist.. So far in my experience with computers, I've stuck with the things I consider the highest priority. Like Windows for instance. It's the dominant operating system in the world, and the one I'm most likely to encounter when helping someone. I've chosen to put off Linux/MAC until I have a solid understanding of Windows and it's functions... Yes, Windows and a thorough understanding of hardware and Network basics. These things I've stuck to exclusively, priming myself up for learning programming, which I have finally started, recently.. Bottom line is, priority. My priorities just happen to be as described above.ahh, this is that game assignment is it not?

Treval, why not ask the questions in the programming forum here?
Discussion
1959.

Solve : helped needed with .BAT?

Answer»

Quick intro: HELLO, my name is jory 18 years old and doing an Education in the netherlands
i hope you don't mind my grammar MISTAKES (not my FIRST Language )

Right now i had to work with CMD (no problem) and made a new shared map called nwemap_xp1

as a final i have to make a .bat SCRIPT that redirects the drive S: and T: to the c:/nwemap_xp1
I've tried EVERYTHING, but it doesn't seem to work like it should

could anyone help me?

thanks in advance!
Discussion
1960.

Solve : help .bat -> MySQL?

Answer»

Hi there,

There is a cammand/script on a FILE .bat to execute a mysql query automatically?

best regards.Normally SQL queries are written in PHP, server level, etc, but if you really want to run in a bat file there is a command line version too. You can use the command-line TOOLS OSQL or SQLCMD. SQLCMD has some extra bells and whistles. For an overview over command-line OPTIONS, once installed, run OSQL -? or SQLCMD -? at the command line.

You can then create SQL files and then call them from the bat file.

You can also pass parameters on the command line or bat file and reference them using %1 through %9. The examples below execute all the ".sql" scripts in the current folder using the server, database, user and password passed as command-line arguments.

For example:
Quote

FOR %%f IN(*.sql) DO SQLCMD -S %1 -d %2 -U %3 -P %4 -I -i "%%f"


A bit of hax-tips if you ask me, use it for good not evil... lol
Discussion
1961.

Solve : Data base (SQL) online course?

Answer»

Hello guys

I am studying BATA base management, in prticular (SQL)
as I would like to have some online practices,
kindly, if ypu know any sites that OFFER FREE beginner practices share it with me, I will APPRECIATE it for you,

many THANKS in advance, http://www.w3schools.com/sql/
Discussion
1962.

Solve : help with C++ code?

Answer»

The advantage of 2x3i5x's version is it is actually C++, not C pasted into C++. Thanks, 2x3i5x @ 2x3i5x


Just for the record, when you declare "grade" as a char type, does that mean entering "A" is really the ascii equivalent "65", and is incremented to "66" (B), when grade = grade + 1 ? Is that how this is WORKING ?


From what I understand, it's the cin object that converts character constants such as A to it's equivalent NUMERIC value which is stored into ram, and when outputted, it's the cout object converts that numeric constant in ram back to the ascii equivalent.. hehe I think I got this..





EEVIAC: that's how it works with strings in every language, though- the characters are of course stored as their ASCII/ANSI/Unicode equivalent. The difference here is that C and C++ have no "byte" datatype- their "byte" is the char data type.

the i/o routines, and everything, treat it as a number. Nothing treats it like a string, or a string character.- however, when C or C++ send it to the OPERATING System display routines- the console treats it like an ASCII code- a byte being sent with 65 is represented with an A. this makes sense, in that printing 65 instead would indicate the writing of two, rather then one, byte. So we have it like this:

1. C/C++ program works with char data type (perhaps an array). it is treated, they get no special treatment- uppercasing is as easy as subtracting 32 in certain circumstances, and lowercase by adding 32.

2. at some point, the program sends the char data off to an output function.

3. the output function is explicitly designed to accept an array of bytes and translate them into display characters. note that this obviously doesn't apply for writing to a file- in that CASE the data is simply written to the file (if the file is later loaded by a text editor the various byte values are translated to the characters you see on-screen).ahh, illumination



you get another Lolipop, BCIt's interesting that there are so many ways to accomplish a single task in programming.

The assignment that I was trying to do here wanted an output as specified in my previous posts. I had to go back through the CHAPTER to try to guess which way the author intended the program to be written. I assumed the assignment was to be written using techniques discussed in it's corresponding chapter. It didn't occur to me that I could have done it the way 2x3i5x suggested.. With out the instructor to go along with the book it's kind of difficult to figure out what's required. In other words, I hope I learned what the author intended...

What's really hard is trying to comprehend EVERYTHING that is discussed in the chapters, and recalling that information when you actually need it at the end of the chapter... For me, by the time I get through a chapter, sometimes I can't recall what was said at the beginning of the chapter... I wish I had photographic memory. Programming is probably much easier certain people..Yeah, there are different ways to do same thing. Some are more efficient methods than others and some are simpler to write out. So it takes practice to get things in place.
Discussion
1963.

Solve : Perl cardiac computer emu'?

Answer» [emailprotected]:~/Desktop/cardiac$ PERL pe.pl
Can't locate Tk.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl .) at pe.pl LINE 4.
BEGIN failed--compilation aborted at pe.pl line 4.
[emailprotected]:~/Desktop/cardiac$

what is WRONG with the perl program
source of program
http://dale-miller.com/cardiac-cardboard-illustrative-aid-to-computation/

[recovering disk space - old attachment deleted by admin]your missing the perl/tk module, or more precisely, it hasn't been part of the default perl install for a while.

try installing the module through CPAN:

Code: [Select]cpan -i Tk
you might need to run that as root:
Code: [Select]SUDO cpan -i Tk


That might not work though- CPAN sometimes has issues and reports errors, in that case, you can do it the "hard" way:

download the archive straight from CPAN: http://search.cpan.org/CPAN/authors/id/S/SR/SREZIC/Tk-804.028.tar.gz

Extract/untar and enter the DIRECTORY, and run the following:
Code: [Select]perl Makefile.PL
make
make test
make install
Discussion
1964.

Solve : help with java pragram?

Answer»

i am USING eclipse to make my java program and it is showing me some errors. i try to fix them but it STILL shows errors.

Code: [Select]package window;

import java.awt.event.ActionEvent;
import java.awt.event.ACTIONLISTENER;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class testModems extends JFrame {
// makes buttons
JButton cablebutton = NEW JButton("Cable");
cablebutton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
CableModem roadRunner = new CableModem();
roadRunner.speed = 4000;
System.out.println("Trying the cable modem");
roadRunner.displaySpeed();
roadRunner.CONNECT();
}
});

JButton DSLbutton = new JButton("DSL");
DSLbutton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
DSLModem bellSouth = new DSLModem();
System.out.println("Trying the DSL modem");
bellSouth.displaySpeed();
bellSouth.connect();
}
});

JButton Wireless = new JButton("Wireless");
Wireless.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
wireless waves = new wireless();
System.out.println("Trying to connect to wireless connection");
waves.displaySpeed();
waves.connect();
}
});

public testModems() {
super("Modems");
setSize(100, 200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
FlowLayout lay = new FlowLayout();
setLayout(lay);
add(cablebutton);
add(DSLbutton);
add(Wireless);
setVisible(true);
}
}
Would you mind telling us the errors..

Where are all your other classes?never mind i found out what i did wrong
Discussion
1965.

Solve : Problem with build.xml file?

Answer»

The ant jar file is included in sub-project and its used only within this sub-project, But it giving the error :
Quote

nested exception is java.io.FileNotFoundException: class path resource [org/apache/tools/ant/types/Path.class] cannot be opened because it does not exist

If i copy the jar file in master project it WORKS fine. but it need not to be added in master project as it is used only within sub-project.

Please comment and help to find solution.
ThanksGot the solution of the problem .

we are RUNNING a SHELL script which call all the program , so before CALLING any master or sub project we copy all the jar file at ONE common lib path , which solves the issue.

Thanks
Discussion
1966.

Solve : Writing a Batch File to Copy and Open File on CD?

Answer»

Quote from: Salmon Trout on April 19, 2010, 11:30:34 AM

Actually you're not; if you read the code, fsutil is called once for each drive letter that exists.
ONE don't normally (normal circumstances) have that much drives letters being used up , but however it that does occur, you would still NEED to go through that loop and test for each one. ie (if "Z" is really the drive letter for CDROM).
I really should have said that he need to exit the loop once the CDROM drive letter is found so that he won't go through the rest of the letters.Quote from: ghostdog74 on April 19, 2010, 10:16:56 PM
one don't normally (normal circumstances) have that much drives letters being used up , but however it that does occur, you would still need to go through that loop and test for each one. ie (if "Z" is really the drive letter for CDROM).
I really should have said that he need to exit the loop once the CDROM drive letter is found so that he won't go through the rest of the letters.

My CD-ROM drive letters are X on one machine and Z on another.

If 26 letters take AROUND 250 mS, why worry?

Quote from: Salmon Trout on April 20, 2010, 12:16:04 AM
If 26 letters take around 250 mS, why worry?
well, that's fine if you are measuring against a simple task such as find a drive letter and that's all. In general if there are other intermediate tasks inside the for loop that needs to be performed, its still better to use a more efficient approach. I know, not everyone is a speed freak like me... Quote from: ghostdog74 on April 20, 2010, 01:00:45 AM
well, that's fine if you are measuring against a simple task such as find a drive letter and that's all. In general if there are other intermediate tasks inside the for loop that needs to be performed, its still better to use a more efficient approach. I know, not everyone is a speed freak like me...

a Speed freak that prefers interpreted languages? Quote from: BC_Programmer on April 20, 2010, 01:32:47 AM
a Speed freak that prefers interpreted languages?
almost what we do involves interpretation. You write a batch file, and its interpreted by cmd.exe. same as vbscript, Python ,Perl. etc. When i mention "speed freak" i am talking about doing things in the most efficient way, short of writing a real C program (or what the heck, assembly) myself. I want the power and fast development time of an interpreted language as well. got that?Quote from: ghostdog74 on April 20, 2010, 02:39:15 AM
doing things in the most efficient way

That phrase is capable of so many differing interpretationsQuote from: Salmon Trout on April 20, 2010, 11:04:32 AM
That phrase is capable of so many differing interpretations
like?think about it.
Quote from: Salmon Trout on April 21, 2010, 12:05:11 AM
think about it.

i have ALREADY stated my case. doing thing the most efficient way,
1) speed of development. with good data structures and ease of use of my tools, i can create programs to do my task in less than a few minutes.
2) with a good TOOL, I can have better control of the things i want to do, reducing the chances of writing redundant code. With less redundant code, my program/script will run faster.

If you are not going to say what you meant, then what's your point in posting? Quote from: ghostdog74 on April 20, 2010, 01:00:45 AM
well, that's fine if you are measuring against a simple task such as find a drive letter and that's all.

That's what this thread is about.
Quote from: Salmon Trout on April 21, 2010, 12:03:54 PM
That's what this thread is about.
yes, this thread is about that. But my replies all started with TC's comment on his batch's slowness, not directly meant for the OP, trueparadox.
Discussion
1967.

Solve : generic programming?

Answer»

What is it ?Generic programming is a style of computer programming in which algorithms are written in terms of to-be-specified-later types that are then instantiated when needed for specific types provided as parameters.
In VB.NET, C#, and most other .NET languages, this functionality is provided by native CLR SUPPORT for generic type CLASSES. In fact, a good number of classes in the framework are generic classes- ArrayList, List, etc.

C++ doesn't support a functionality CALLED "generics" but it's template classes are nearly the same. The difference is that, strictly speaking, (and, if I underastand it correctly) template classes are really just sets of macros that expand to create an entirely new class definition for each type that you specify.

At first I MISINTERPRETED the question as "genetic programming" which is a fair bit different, and a lot harder to answer.I still don't get it



It's ok. I'm confident that I'll know what it is, in time..


Translate to nooblang. :O
'Neurolinguistic Programming' is even harder to answer.

I'll TRY to explain (from what I understand here):

You have a list of 'templates'.
These are the 'generic' classes.
By generic, one simply means 'all-round', 'not specific'.
Let's try to do an analogy:

I have defined the generic type 'list'.
We all know what a list is, but the computer will never know
what on earth you want to make it a list of,
or what you want to put in that list.

Therefor, later, you put a bunch of humans in that list, for example (lol).
Now, it is a list of humans.

Code example:

List humans = new List();
List cheeses = new List();

In these examples, the generic types are Human and Cheese.
One list contains humans, the other contains cheeses.

I hope that helps to explain it because I don't know much of generic types myself.

Discussion
1968.

Solve : HTML with remarks added and not showing up in HTML itself?

Answer»

How do you add remarks to a HTML document without having them interfer with the running of the HTML document itself, and/or showing up on/or in the HTML document when viewing it?

Like qbasic you type REM or '


JohnHTML comments are pointless poll
Quote from: Salmon Trout on January 04, 2010, 01:50:06 PM

pointless poll
If you don't understand the question, don't vote!MUST have just started the poll lately didn't quit know what to put in those boxes without understang the situation.Internet Explorer 6 has a puzzling bug involving multiple floated ELEMENTS; text characters from the last of the floated elements are sometimes duplicated below the last float. This bug is a real headbanger because there seems to be nothing triggering it. However, by now everyone should know that IE needs no excuse to misbehave. The direct cause is nothing more than ordinary HTML comments, such as, , sandwiched between floats that come in sequence. Apparently, the comments are HARD for IE to digest when they occupy those positions, resulting in a kind of "SCREEN diarrhea". HTML comments inside the floats do not cause the bug, nor do comments before or after the float series. Only comments residing between floats cause the bug.





=========================================
windows 7 exams
Seems like neither internet 6 and 7 work good any more, so I use firefox.

John1397Quote from: John1397 on April 19, 2010, 07:18:06 AM
Seems like neither internet 6 and 7 work good any more, so I use firefox.
Yes, but everyone viewing your website might not.
Discussion
1969.

Solve : Endianess dependency of package.?

Answer» BUILD environment: Debian LENNY; POWERPC(32)
GCC 4.3
gnumake
g3/750 400mHz
374M RAM.

Package gpart has an endianess "dependency" such that it will not build on current processor.
Is there a WAY of forcing a build?
Discussion
1970.

Solve : help understanding C++ code?

Answer»

This is a sample program out of a book I have (C++), demonstrating the use of the "continue" statement, in a FOR LOOP. The program asks you how many "items" you want to buy and charges 3 dollars per item, but the 13th item is free. For example, if you enter that you want 12 items, you'll be charged 36 dollars. If you enter that you want 13 items, you're still charged only 36 dollars. When you enter "14" the "total" BEGINS to increment again, and you would be charged $ 39 in that case. (EVERY 13th item is free)

Where I get confused is the use of the "total +=3;" statement.. I just don't get how exactly it works.

Code: [Select]#include <iostream>
using namespace std;
int main(void)
{
int num;
int counter;
int total = 0;
cout << "How many items do you want to buy: ";
cin >> num;
for (int counter = 1; counter <= num; counter++)
{
if (counter % 13 == 0)
continue;
total += 3;
}
cout << "Total for " << num << " items is $ " << total << "\n";
return 0;
}
nevermind, someone gave me a tip..

I couldn't visualize that total += 3; is the same thing as total = total + 3;

The latter makes more SENSE and I think I'd rather use that syntax instead..
-makes the ULTIMATE NOOB sound-

Just kidding EEVIAC. That's rather beginners stuff yes. =P
You could also read up on the difference between i++ and ++i. =)I've got two books that I'm learning out of right now... One of them is like a text book for students and the other is a simplified explanation of the language. I started out with the text book, got overwhelmed a little and switched over to the basic book which is not as thorough in it's explanations, so I get confused at times. After finishing the basic book I'm going back to the text book where I left off and doing the assignment programs at the end of the chapters.. The basic book is quite handy actually. When I get confused about something in the text book, I look for a simplified explanation in the basic book.. hehe

Quote from: Treval on April 17, 2010, 08:11:03 AM

You could also read up on the difference between i++ and ++i. =)

HAHA! I know that!

Code: [Select]#include <iostream>
using namespace std;
int main()
{
int a,b,y,z;
z=y=5;
a=z++;
b=++y;
cout << a << " " << b << " " << y << " " << z;
}
would print:
5 6 6 6

basically, ++ or -- the variable will increment/decrement the value RETURNING it's value, so if you did something like cout << x++; it would print the current value of x and then increment it by one, whereas cout << ++x would increment it and then print that value.



}
I don't get the z=y=5 part. =P

EEVIAC, through my own experience, I'd say take the basics book first.
However it's fine how you're doing.Quote from: Treval on April 17, 2010, 11:29:09 AM
I don't get the z=y=5 part. =P

EEVIAC, through my own experience, I'd say take the basics book first.
However it's fine how you're doing.

assignment- think of it this way:

z=(y=5)

of course, = is assignment, so y is assigned 5, but assignment also "returns" (as a rval) the assigned value- so 5 is returned, and then the other assignment assigns it to z. the end!
Discussion
1971.

Solve : designing of operating system?

Answer»

hi
i am trying to create an OPERATING system based on artificial intelligence so that it will ABLE to read all the hard drives and generate the drivers for that all hard drivers at the time of INSTALLATIONS of operating system and any time whenever a USER insert a new hard drives. and all others functions should be same or may be upgraded. Can any one HELP me to design an operating system. operating system must inform to user about corrupted files and suspicious program.

Benefits: user will never worry about to keep safe their systems drivers.Nice project you got there.id love to help if i could lolUuuu. That is probably going to be a big project. I probably can't help but it might help others if you state your programing knowledge and if at all you have started building it or were you got the idea.Look at the design of minix. Good luck with that. Let us know how it works out for you.
Discussion
1972.

Solve : New to the concept of creation of Batch Files?

Answer»

Hi all,
I am New to the concept of creation of Batch files could any ONE provide me guidelines .

Thanks,
Rajeswari.
Welcome to the CH forums.

Google for Batch Scripting TUTORIALS and take your pick.Quote from: rajeswari.byra on April 16, 2010, 01:14:56 AM

Hi all,
I am New to the concept of creation of Batch files could any one provide me guidelines .

Thanks,
Rajeswari.


if you REALLY want to learn about batch, you can SEARCH google for references. there are plenty. this is just one of them. However, SINCE you are just starting, my recommendation is to try to learn a programming language such as Perl or Python. They can do what batch can do and a lot more that batch can't do (easily).
Discussion
1973.

Solve : The XNA thread?

Answer»
I really, really need help with this framework because I'm doing my final on it. =P
So I'll ask questions here whenever needed!

Here's my first:

1) Does one really need to use XNA's pre-built methods such as LoadContent(), Initialize(), UnloadContent(), to simply draw SOMETHING on the screen? Sure, you need a spriteBatch, which needs a GraphicsDevice, but can't I just throw in all needed variables in one line without using these methods?

Here's something strange:

Code: [Select]public General()
{
GraphicsDeviceManager graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
sprites = new SpriteBatch(GraphicsDevice);
}

Why is my compiler complaining that GraphicsDevice is null?
woah, XNA is certainly one of those new, complex things... give me a little while to learn about it, then I'll see if I can be any help. I've heard a lot about XNA and it's about time I see what it's all about.

Also, it might help in my quest at making a version of one of my games in a .NET language. And of course I can't really help unless I learn it, right?

ATM, I don't really know what you're doing in that code segment; I assume "GraphicsDevice" is either a global static in XNA or defined elsewhere? It's certainly not being set here. (you didn't mean to use new SpriteBatch(graphics), did you?)...

OK, got XNA working.

From what I can gather, you aren't supposed to initialize the sprites and so forth in the constructor, but rather in the "loadcontent" routine.

Actually I just opened the template

This is the template it gave me; it doesn't do anything, but it doesn't crash. THis was with XNA 3.1 and Visual Studio 2008:

Code: [Select]using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using Microsoft.Xna.Framework.Net;
using Microsoft.Xna.Framework.Storage;

namespace mygame
{
/// <summary>
/// This is the main type for your game
/// </summary>
public class Game1 : Microsoft.Xna.Framework.Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;

public Game1()
{


graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";

}

/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
// TODO: Add your initialization logic here

base.Initialize();
}

/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);

// TODO: use this.Content to load your game content here
}

/// <summary>
/// UnloadContent will be called once per game and is the place to unload
/// all content.
/// </summary>
protected override void UnloadContent()
{
// TODO: Unload any non ContentManager content here
}

/// <summary>
/// Allows the game to run logic such as UPDATING the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing VALUES.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();

// TODO: Add your update logic here

base.Update(gameTime);
}

/// <summary>
/// This is called when the game should draw itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);

// TODO: Add your drawing code here

base.Draw(gameTime);
}
}
}

Rather hefty...

But here's the kicker- as you may have read, XNA is based on DirectX.... well, I've used DirectDraw and Direct3d 7 and 8 from VB6, and a lot of the basics here look pretty similar- they just have a helpful framework (XNA) that makes the whole process a lot easier.

For example, I wanted to actually Draw something, something fun an interactive!

the goal was simple- this is my first ever use of XNA, so I decided, to simply draw a string.

I immediate dove in- the SpriteBatch had a "DrawString" method that looked suitable. but it needed a SpriteFont! No problem, let's see if new SpriteFont() works... Nope, it doesn't have any constructors.

So I made a quick google for SpriteFont, which led me to a article about how to draw text:

http://msdn.microsoft.com/en-us/library/bb447673.aspx

This explained that I needed to add a "SpriteFont" item to my "Content" Area. Fair enough, I figured. So I did so; in the interest if using my favourite font, Consolas, I called it Consolas and changed the name appropriately as well.

Now, I assumed that the stuff in Content was being loaded by the suitably NAMED "LoadContent()" routine that the template had already created for me, so I created a class level SpriteFont variable, which I named Consolas, and then added this to the LoadContent() routine:

Code: [Select]Consolas = Content.Load<SpriteFont>("Consolas");

then, in the Draw() routine I added:
Code: [Select]spriteBatch.DrawString(Consolas, "Test string", new Vector2(50, 50), Color.Black);

Oh the excitement!

ATM I have this, which changes the background and moves the text as you move the mouse around the window:

Code: [Select]using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using Microsoft.Xna.Framework.Net;
using Microsoft.Xna.Framework.Storage;

namespace mygame
{
/// <summary>
/// This is the main type for your game
/// </summary>
public class Game1 : Microsoft.Xna.Framework.Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
SpriteFont Consolas;
Color mBackColor;
int mmouseX, mmouseY;
public Game1()
{


graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";

}

/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
// TODO: Add your initialization logic here

base.Initialize();
}

/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
Consolas = Content.Load<SpriteFont>("Consolas");

// TODO: use this.Content to load your game content here
}

/// <summary>
/// UnloadContent will be called once per game and is the place to unload
/// all content.
/// </summary>
protected override void UnloadContent()
{
// TODO: Unload any non ContentManager content here
}

/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();

// TODO: Add your update logic here
UpdateMouseData();
base.Update(gameTime);
}

protected void UpdateMouseData()
{
MouseState current_mouse = Mouse.GetState();

// The mouse x and y positions are returned relative to the
// upper-left corner of the game window.
mmouseX = current_mouse.X;
mmouseY = current_mouse.Y;

// Change background color based on mouse position.
mBackColor = new Color((byte)(mmouseX / 3), (byte)(mmouseY / 2), 0);
}



/// <summary>
/// This is called when the game should draw itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Draw(GameTime gameTime)
{

GraphicsDevice.Clear(mBackColor);
spriteBatch.Begin();
spriteBatch.DrawString(Consolas, "Test string", new Vector2(mmouseX, mmouseY), Color.Black);
// TODO: Add your drawing code here
spriteBatch.End();
base.Draw(gameTime);
}
}
}

I have to say... I was doubtful but XNA really is awesome, and it's easy too... at least it is if you've worked with DX before YES... that's correct. If you've worked with DirectX before. =P
I've been since september working on XNA and I know just about as much as you did in one day. LOL!
Yeah. No, I've never worked with XNA. A lot of veteran programmers think XNA is a piece of cake. Well, not for me, even though it has all pre-built methods and classes in the framework.

Here's a nice starter's game you can make:

XNA 2D space invaders

Have fun making it. =P
Discussion
1974.

Solve : Blackberry App help!?

Answer»

Hi, I just CREATED my very first APP for my Blackberry Pearl 8100. It is a very simple "Helloworld" app that will obviously, just display the phrase, "HelloWorld!". I was able to find it in the Options/Advanced Options/APPLICATIONS list, but I cannot find it in the main menu where all the other applications and icons are. I'm pretty sure I just forgot to do something. What I did was first, created the JAVA program with Eclipse, then used javaloader.exe in command prompt to load the .cod and .jax file, then used Blackberry Desktop Manager 5. something to do the actual installing of the app, but in the app list is the only place where I can find it. Any help is greatly appreciated. THANKS
Discussion
1975.

Solve : for vs foreach?

Answer»
When would one use for and when foreach?
What are the pros and cons for each of these CONDITION structures?
foreach enumerates through a collection faster then using for and accessing that collection by index. for is for looping when you KNOW the STARTING and ending CONDITIONS, or for more general purpose looping.

everything you can do with a for() loop, you can do with a do....while loop, it's really just a shorthand. in the same way that foreach is a shorthand for a for loop something like this (psuedocode):

ENUMERATOR = collection.GetEnumerator();
for(loopvalue=enumerator.GetFirst();!Enumerator.HasItems();loopvalue=enumerator.GetNext())
{


}

instead of
foreach(loopvalue in collection)
{


}

the second one is a little easier to read
Discussion
1976.

Solve : ListBox - visual studio 2005?

Answer»

Hi, I created a project with multiple forms using visual studio 2005. 1 of the forms has a listbox that is supposed to display data from a linked list. The linked list is working fine cos i tried to display data using MessageBox.Show() and it was ok. The problem is when i try to display it into the listbox, i get an exception error. How can i get it to display the items from the linked list?

My listbox is in frmTraversal and it is called lstItems.

The CODE in the linked list is as follows:

frmTraversal.lstItems.DataSource = nodedata.Name & _
" (" & nodedata.Age & ", " & _
nodedata.Gender & ")" & "-->"

you are SETTING to datasource to a string object. Datasource must be an object that implements the IList or IListSource interfaces- such as the linked list itself.ok, so which property should i use? I can't use Items cos it's a read-only property. Is there a better way of getting the items to be displayed into the listbox?if nodedata is the linked list then try:

Code: [Select]frmTraversal.lstItems.DataSource=nodedata

Thanks, but still no joy I've decided to simplify life and use a Label instead... it's more friendly However, i would really appreciate it if someone could help me out with the ListBox problem.Alright at the moment I'm very tired so I'll just take a wild guess on how to get your data to display correctly:

frmTraversal.lstItems.DataSource = nodedata;

for (int i=0; i{
frmTraversal.lstItems.Text = nodedata.Name & _
" (" & nodedata.Age & ", " & _
nodedata.Gender & ")" & "-->"
}

I might be completely wrong but hey let me KNOW. =P
The point is, you assign a DataSource object (which contains the data of LinkedList) to fill in the ListBox,
you then traverse each item in this DataSource and assign every Name+Age+Gender
as a String to put into the ListBox' items as the .Text value of each node.

I see you are working with VB .NET so please translate my code to your own likings.

Hope it helped.
You know what, we really don't have enough information to work with.


LinkedList is a Generic Class.

What type is the linkedlist? that is, how is it declared?



Anyway, I made the following small test:

A single Listbox, a single button, with the default names:

Code: [Select]Public Class Form1
Private Class CNodeClass
Public Sub New(ByVal Name As String, ByVal Gender As String, ByVal Age As Long)
End Sub
Public Sub New()
Name = "Name" + Trim$(Rnd() * 800000)
Gender = IIf(Rnd() > 0.5, "F", "M")
Age = 10 + Int(Rnd() * 40)
End Sub
Public Name As String
Public Gender As String
Public Age As Long
End Class
Private mLinkedList As LinkedList(Of CNodeClass)
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
mLinkedList = New LinkedList(Of CNodeClass)
For I As Integer = 1 To 40
mLinkedList.AddLast(New CNodeClass())
Next
Me.ListBox1.Items.Clear()
Me.ListBox1.DataSource = mLinkedList
For Each litem As CNodeClass In mLinkedList
Me.ListBox1.Items.Add(litem.Name + "," + CSTR(litem.Age) + "," + litem.Gender)


Next


End Sub
End Class
Thanx very much 4 the suggestions. I'll work on it and give you feedback on the outcome...I tried it out but it didn't work 4 me Nothing was displayed and an ArgumentException was thrown. Also, there was a message SAYING..Complex DataBinding accepts as a data source either an IList or an IListSource. I've decided to let it go for now, cos i used a textbox and it displayed my data just fine. Smurfet, please post your full code. =P
Discussion
1977.

Solve : C compiler, graph.h.?

Answer»

Java can be run on nearly every platform with only minor changes... C#, F#, VB.NET, and managed C++ can run on Windows and Linux, as well.

Although I don't think you can use anything in the System.Windows namespace on Mono...Quote

"code" then all computers would be at risk of every virus.

This idea has some merit.
However, it is not enough reason to have many kinds of OS.
It is very possible to put up resistance to a virus with just one OS. The one OS can have several 'strains", not mutations, RATHER variations in the low-level structure which would make it hard for a virus to identify the build of the OS.

Windows, as well as other OS, already hae DLL programs. This can be extended to that a hostile program can not 'crack' the DLL, it a proper program would have no problem with the DILL. The hostile code wants to find a weak sport inside the DLL. The friendly program only wants to use the DLL, not pick it apart.

Microsoft has already hinted they may do something that that in the future. Thus you will have hundreds of different 'builds' for just one release of Windows, All the API is the same. Just he binaries vary in some detail. Enough to make it very had for a virus to attach itself to a bit of code without bringing the system down.
Is this off topic? Well, I am trying to say that just as you can have many flavors of Linux, that can also be done with Windows without really making any visible changes. Which is even better.
Quote from: Geek-9pm on April 11, 2010, 11:14:32 PM
This idea has some merit.
However, it is not enough reason to have many kinds of OS.
It is very possible to put up resistance to a virus with just one OS. The one OS can have several 'strains", not mutations, rather variations in the low-level structure which would make it hard for a virus to identify the build of the OS.

Windows, as well as other OS, already hae DLL programs. This can be extended to that a hostile program can not 'crack' the DLL,

err...

a DLL is an In-process LIBRARY. It's loaded in the same process as the caller. malware doesn't change this.

What malware does is install a global hook on certain DLL functions, for example, they usually hook CreateFile and other file access functions to hide files. AV programs do this too to detect when a f ile is being opened.

There is no "weak spot" in a dll. it's in process; you LOAD it, and it belongs to your process. the DLL allocates data in address space. it uses stack, it uses heap. It uses process memory so you can do what you please with it, including changing jumps and ordinals.

Most "hook" malware is written via a early-loaded DLL, often a winlogon notify hook. this sets it up so that every process will be implicitly bound to a malware-designed DLL, which, when it's DllMain() is called, can hook the functions that would otherwise go to kernel32 or user32 or whatever and do what it pleases with them instead.

Quote
rather variations in the low-level structure which would make it hard for a virus to identify the build of the OS.

That's ridiculous. the very same "variations" and randomness that would make malware writing difficult also makes diagnostic utilities and process analysis difficult. What we need is a better heuristic that can better detect malicious use of those functions, not obscurity of those functions.



it a proper program would have no problem with the DILL. The hostile code wants to find a weak sport inside the DLL. The friendly program only wants to use the DLL, not pick it apart.

Microsoft has already hinted they may do something that that in the future. Thus you will have hundreds of different 'builds' for just one release of Windows, All the API is the same. Just he binaries vary in some detail. Enough to make it very had for a virus to attach itself to a bit of code without bringing the system down.
Is this off topic? Well, I am trying to say that just as you can have many flavors of Linux, that can also be done with Windows without really making any visible changes. Which is even better.

[/quote]Quote from: Geek-9pm on April 11, 2010, 11:14:32 PM
it a proper program would have no problem with the DILL.

There's the problem. Somebody has a pickle in their compiler.Quote from: rthompson80819 on April 11, 2010, 11:39:10 PM
There's the problem. Somebody has a pickle in their compiler.

A pickle?WARNING. Do NOT search on 'Pickle Compiler' as those keywords lead to sites that will infect your system. Do NOT use the pickle library unless you know exactly what it is.Quote from: Geek-9pm on April 12, 2010, 01:18:44 PM
WARNING. Do NOT search on 'Pickle Compiler' as those keywords lead to sites that will infect your system. Do NOT use the pickle library unless you know exactly what it is.
It is a good thing I have a backup plan. HAHA.

What is the deal with this pickle compiler/bad for computer thing?Quote from: Boozu on April 12, 2010, 05:17:09 PM
What is the deal with this pickle compiler/bad for computer thing?

I have absolutely no idea. I know rthompson mentioned it because of a typo in one of geek's posts. (dill)Lame joke, sorry.Here a safe place to dload pickle for C++
http://linux.softpedia.com/get/Programming/Widgets/Perl-Modules/Pickle-55831.shtml
We are talking about Linux -Right?
Just be careful about where you get Pickle.Geek-9pm you mentioned:
STATIC void CGContextSetTextPosition(
IntPtr context,
float x,
float y
)

Can you please ELABORATE? I have stared building my program in a proper C compiler so I need a new way to set x,y coordinates.Quote from: Boozu on April 14, 2010, 01:49:10 AM
Geek-9pm you mentioned:
static void CGContextSetTextPosition(
IntPtr context,
float x,
float y
)

I have stared building my program in a proper C compiler

Well, I can tell you right off that that segment of code geek said is C#, not C.k. There must be some way of setting x,y in C. I have googled the *censored* out of it and I am not finding anything.
Discussion
1978.

Solve : admin services?

Answer»

every time i turn on computer i have to go to administrative tools, services and start my wmi performance ADAPTER and my WIRELESS zero configuration for my wireless internet to start. how do i make it start automatically when i turn on computerIf this was a programming challenge I'd say it can be done using AutoIt, VB Script, or Powershell easily. I'm assuming your post needs to be moved and the solution will be made available. Meanwhile, I SUGGEST looking at the setting for your WMI performance adapter and the wireless zero configuration. WMI should be set to "manual" Startup Type and Wireless Zero should be set to "AUTOMATIC". If those are the settings already present then it must be something else. I also suggest a wireless helper utility could be the culprit, but more info is needed. What model of computer you GOT there?
Discussion
1979.

Solve : Programming Elegance?

Answer»

Alright, so the other day I was talking to C# programmers about C#.
They think my style of code is really ugly and horrid. I don't believe it to be so.
So I would like to know what you guys think about my style and their style and its readability/elegance/usefulness.

I think it's humanly more easily readable if I write comparison like this:

if (a == 10) { b=30; }
if (number==42) { number2 = 43; }
if (test) { a=10; }

This is how they would write it (not the same statements, but the same idea, other style):

bool b = a == 10;
myList.Where(e -> e == 42);

I'm sorry but, it's quite confusing to me to write
bool b = a == 10;
just to say "if a equals 10 then make b true".
Maybe I'm just not used to that style but I find it ugly.
They, on the other hand, find my style ugly, which I think is pretty readable:

if (a==10) { b = true; }

So, do I have the horrid code or what?
I don't get what's so bad about my style but anyway.
Same counts for ternary operators rather than if/else..

Here is an example of my 'horrid' code.. :
Code: [Select]
class DialogBox
{
#region "Properties"
private Color bgColor, fgColor;
private Vector2 textPos, bgPos;

#endregion

public DialogBox()
{
bgColor = Color.Blue;
fgColor = Color.White;

}

public Vector2 BgPos
{
get;
set;
}

#region "Methods"
public void Say(string output, ref Vector2 stringLoc, Rectangle rect,
SpriteBatch sprites, SpriteFont sfont, Texture2D txtr, Vector2 bgPos)
{
//Draw the background texture
this.bgPos = bgPos;
sprites.Draw(txtr, bgPos, null, Color.White, 0.0f, new Vector2(0f, 0f), 25f, SpriteEffects.None, 0);

char[] chars = output.ToCharArray();
string tempChars=chars[0].ToString();
Console.WriteLine("textPos.X: "+textPos.X);
float textPosCopy = textPos.X;
char[] charss = null;

for (int i = 1; i&LT;chars.Length-1; i++)
{
//foreach (char c in chars)
//{
Vector2 measure = sfont.MeasureString(tempChars);

if ((stringLoc.X + measure.X) > (rect.X + (rect.Width) * 25)+5)
{
int icopy = i; //31
int y = 0; //31
y = icopy; //31
Console.WriteLine("textPos: " + textPos.X);

char[] newChars = new char[chars.Length-y];
oldChars = new char[chars.Length];
Array.Copy(tempChars.ToCharArray(),oldChars,tempChars.Length);
Console.WriteLine("i: "+i);
Array.Copy(chars,y,newChars,0,chars.Length-y);
tempChars += "\n";
tempChars = "";
textPos.X = textPosCopy;

for (int x = 0; x < newChars.Length; x++)
{
oldChars[y] += newChars[x];
}
}
else
tempChars += chars[i];
#region "Console test"
//chars = tempChars.ToCharArray();
Console.WriteLine("StringLoc: " +stringLoc.X);
Console.WriteLine("StringLoc+width: " + (stringLoc.X + measure.X));
Console.WriteLine("Dialog Width: " + (rect.X + (rect.Width*25)));
Console.WriteLine("Char: " +tempChars);

Console.WriteLine("\n");
//}
#endregion

}

//Draw the text
textPos = new Vector2(bgPos.X + 15, bgPos.Y + 15);
Vector2 textTestPos = new Vector2(bgPos.X + 15, bgPos.Y + 40);

sprites.DrawString(sfont, , textPos, fgColor,0.0f,new Vector2(0f,0f),
1.0f, SpriteEffects.None, 0);
#region "Testing"
/*sprites.DrawString(sfont, "Text \n next line Text",textTestPos,fgColor,0.0f,
new Vector2(0f,0f),1.0f,SpriteEffects.None,0);*/
//Console.WriteLine("TempChars: " +tempChars);
#endregion

}
#endregion
}

I'm sure many of you could write this code a lot better and shorter than me, but I'm just not a good programmer. =P

don't worry, your style is the one i prefer as well. Your fellow C-sharpers just want to be cool that's all. But coolness does not equal readable or maintainable. I do something similar in VB6, instead of, for example:

Code: [Select]if A or B and (Not A and B) then
...

I would do:

Code: [Select]if a Xor b then

simply because that's the definition of xor, of course.

use of assignment operators in expressions only reduces readability for those who don't use it very often; since many languages don't actually implement assignment as a part of an expression it can seem foreign or strange.

But this is about style, not ugly code. Your style differs from theirs, that is all.

All I can really say about the code you display is that it has an awful lot of Console writes for what appears to be debugging purposes, you could add the System.Diagnostics via a using directive and replace those with Debug.Print statements, and then when it's compiled for release none of the Debug statements are effective.

Consider the translation of steps for both, for yours:

Code: [Select]if (a==10) { b = true; }
This translates to at least one Jump instruction, and an assignment, and then a jump out of the IF block (of course this would be IL and I'm not familiar with the particulars of it)

the way they have theirs, there is no jump instruction; one a comparison and an assignment of that result to another variable. Depending on the context this can have a influence on the branch predictor of either the CLR or the processor (I don't know how it translates, really) for native code, the branch predictor adds the assignment to the prediction queue; this saves time when it turns out that a is indeed 10, but if it's not, the entire queue needs to be flushed and a new prediction queue built up from that point. if you do this in a tight loop it can have a perverse affect on speed, sometimes an order of magnitude. Of course since C# is actually executed by IL I really have no idea how it would convert any of that to machine code or wether the branch predictor is relevant, since such prediction will apply pretty much SOLELY to the interpreter.

My personal use of such constructs depends solely on context; for example, in my Expression Evaluator (which served as an impromptu base for "BCScript" a rather silly scripting language that came about purely by accident) I have a "RipFormula" procedure whose task is to take the expression and build a Expression Stack from it. Several important optimizations took place during my creation of this routine. At first, I had a small segment of code that got executed via a "GoSub...Return"... I did this purely for convenience sake at the time. Some time later, I replaced this with a separate routine.

The speed increase was dramatic. Of course this is because GoSub and Goto are adversely affected by Native code COMPILATION for whatever reason.

Additionally, I often use similar techniques if only to increase readability. When you're already nested in several ifs, a Case statement, and a few loops it's best to avoid unnecessary further control blocks. Also, it's easier to integrate; if I want A to be the same as B*-1 only if C is less then Y, and otherwise set it to 0, for example, we do this:
Code: [Select]if C<Y then A=-B else A=0

which is certainly reasonable. But consider for a moment that A is actually just being used for that particular IF and is really intended as part of some calculation- say the next line is something like:

Code: [Select]FOO=100*T.Size/len(T.Filename) /A
eliminating that variable entirely may not have a huge performance impact but annihilating the entire code branch from the loop can. I did this in several places, actually. It translated into this:
Code: [Select]FOO=100*T.Size/len(T.Filename)/((C<Y)*B)
of course such things receive comments to that regard and what they do. And it's a rather contrived example; I added the negative requirement simply because it saved a "abs() call. but remember that Visual Basic "Classic" is rather alone in using 0 to indicate false and -1 (well, strictly speaking anything but 0 is true, but true is returned as -1), most other languages/environments use 1, which can be more helpful in use of similar constructs.

Using Booleans in arithmetic expressions seems unnatural, but once you realize that boolean expressions are just as powerful outside the brackets of the if as they are elsewhere it can become very useful to prevent long code branches and deeply nested ifs that account for all sorts of different conditions.

Very nice. =PTreval , you have style. I don't want people to say that just to patronize me. =PMy statement was only about your code.
Show me your Avitar. Must be ugly.Quote

Treval , you have style.

I read a very good book in the 1980s, still a classic, and often used in programming courses - "The Elements of Programming Style" by Kernighan and Plauger. Brian Kernighan is the famous Unix (he coined the name) and C pioneer (He is the K in AWK). P. J. Plauger is an author. He founded Whitesmiths, the first company to sell a C compiler and Unix-like operating system (Idris). He is also a science fiction writer; he won the John W. Campbell Award for Best New Writer in 1975, notably beating John Varley for the award.

The book is well worth acquiring. There is a PDF extract containing 56 "rules of programming style" available on many college websites including here

http://cs.boisestate.edu/~amit/teaching/handouts/style.pdf

some apt quotes...

Quote
1. Write clearly don't be too clever.
2. Say what you mean, simply and directly.
3. Use library functions whenever feasible.
4. Avoid too many temporary variables.
5. Write clearly - don't sacrice clarity for "efficiency".
6. Let the machine do the dirty work.

Quote
11. If a logical expression is hard to understand, try transforming it.

So, I have style according to points 5 & 6? =P
Then I still have to work on the rest of the points because I have too many temp vars.
What if it's the case that you have no other choice but to choose temp vars (for example, you need a variable to be initialized with a particular value according to a particular item in a foreach)?
Using library functions? You mean the .NET framework funcs? Such as Math.Floor()?
What's an example of point 5?

Thanks for the book.Quote from: Treval on April 11, 2010, 04:32:56 AM

What's an example of point 5?


I should think point 5 maybe covers situations where the programmer gets "clever" and writes code which gets the desired result maybe in one line instead of ten, but which is not immediately understandable to anybody else, (or, often, the same programmer six months later!) I believe the author put the word "efficiency" in quotes to point up the idea that code can be efficient in a trivial sense, i.e. in terms of machine resources, source code size, memory/cpu usage, etc, but be a horror to maintain and debug, thus consuming more than its proper share of human time and resources.Yes that is a good point.
I also try to be firm and clear about my commenting the code. =)Quote from: Treval on April 11, 2010, 05:44:50 AM
Yes that is a good point.
I also try to be firm and clear about my commenting the code. =)

This is one thing I am trying to do more; sometimes I write the comments first.
I use temporary variables all the time. But not too many of them.

I use them to store the result of a function when I need to refer to that result in multiple conditions. A prime example is, for example, a function in my Expression Evaluator called "GetOperator" My first iteration of the code for some reason was calling the function with the same parameters multiple times to decide what to do, so I replaced it with a single call that assigned it to a temporary variable and used that result instead. I did this as well with a few other intensive functions in various locations of the code, and caused a noticable speed improvement. I think it's important to simply not use too many of them at the same time. I often use the
Code: [Select]foreach(typename varname in collection)
{

}
syntax myself in C#, I don't consider it a "temporary" variable, but rather a variable local to the foreach() block, since outside the block it isn't defined.



Re: comments: needless to say, they are important. USUALLY, when I start any non-trivial function, I try to write some sort of "preamble" comments that indicate what it will do, and possibly how that will be done. This is especially useful in that I can decide wether certain portions might be better served as separate functions, as well as prevent errors. I just checked and most of my projects have around 25% of their lines as comment lines. some of those are commented out code though.
Discussion
1980.

Solve : Launching a batch file from qbasic?

Answer»

Does anybody know the statement to run a batch file from Qbasic? I've been trying with SHELL, or RUN... but none of them worked. I would appreciatte an EXAMPLE!!! (the Qbasic version I'm USING is 4.5). Thks in advance!!!Quote

I've been trying with SHELL, or RUN... but none of them worked.

QuickBasic code:Code: [Select]Shell "c:\batfile.bat"
works for me.

The QB SHELL command requires a string as a parameter. Both these work

Code: [Select]SHELL "C:\TEST.BAT"

SH$="C:\TEST.BAT"
SHELL SH$
Won;t work as advertised.
Quote from: Geek-9pm on April 10, 2010, 03:35:02 PM
Won;t work as advertised.


Whatever that means, (?) it worked for us; your task is to work out what you are doing wrong.
Quote from: Geek-9pm on April 10, 2010, 03:35:02 PM
Won;t work as advertised.


Please post QuickBasic and batch scripts which "won't work as advertised"

Quote from: Salmon Trout on April 10, 2010, 05:11:21 PM
Whatever that means, (?) it worked for us; your task is to work out what you are doing wrong.
Yes, it works for you and maybe me.
However, you could have mentioned that there has to be a valid batch file in the directory specified.
Perhaps a more transparent example would be to use the shell for a directory commands like this:
SHELL "DIR C:*.* /B"
in which should work properly unless he does not have a C: drive.

Also there is a version of the Quick Basic that is just simply called QBASIC which I believe was on the Windows 95 CD. That version of basic will not do some shell commands properly.

Just to make things clear for the newcomers.

Actually, I tried the example you gave and could not understand why it did not work and why it did not give an error message that made sense.

Also, QB does not exit after the SHELL command. Does the OP want QB to quit after the batch files starts?
Quote from: Geek-9pm on April 10, 2010, 10:15:38 PM
However, you could have mentioned that there has to be a valid batch file in the directory specified.

But that is obvious even to a little child. I do not understand why you wrote that. That is so deeply trivial that I wonder at your sanity and common sense. A tip, Geek, when you are in a hole, stop digging!

Quote
Perhaps a more transparent example would be to use the shell for a directory commands like this:
SHELL "DIR C:*.* /B" in which should work properly unless he does not have a C: drive.

Again, why did you write that? Are you stoned or SOMETHING?

Quote
Also there is a version of the Quick Basic that is just simply called QBASIC which I believe was on the Windows 95 CD. That version of basic will not do some shell commands properly.

Really? Are you sure? How do you know? How can we believe you? Which shell commands? Did you just make that up?

Quote
Just to make things clear for the newcomers.

A laudable target, but one which you have entirely failed to hit.

Quote
Actually, I tried the example you gave and could not understand why it did not work and why it did not give an error message that made sense.

Don't blame us for your comprehension problems.

Quote
Also, QB does not exit after the SHELL command.

Whoever said or implied that it did? WTH are you blathering on about?

Quote
Does the OP want QB to quit after the batch files starts?

I shouldn't THINK so, otherwise they would have said so.
Geek - I would still like to see the QuickBasic and batch script codings which failed for you.
Discussion
1981.

Solve : Thanks for the effort?

Answer»

Hi,

I really love this FORUM, EVERYTIME I VISITED it, I’m amazed.
I read the messages REGULARLY and I FINALY decided to subscribe.

Thanks
Discussion
1982.

Solve : Javascript function help?

Answer»

So I am doing this tutorial on w3schools, and this is the code:
Code: [Select]<html>
<head>
<script type="text/javascript">
function product(a,b)
{
return a*b;
}
</script>
</head>

<body>
<script type="text/javascript">
document.write(product(4,3));
</script>

<p>The script in the body section calls a function with two parameters (4 and 3).</p>
<p>The function will return the product of these two parameters.</p>
</body>
</html>


What I don't understand is in this line;
Code: [Select]function product(a,b)
Why do the variables have to be in the parameters, when the operation is being declared here;
Code: [Select]return a*b;
And the values of the variables are declared here:
Code: [Select]document.write(product(4,3));
LIKE, why are the variables there twice? I mean does it really need to be? Is the first one just declaring the values, and then the code in the body is giving them their values?

the function line is a declaration.

a,b are defined as parameters.

if they were, for example, ValA and ValB, they would be referred to as such in the function body. otherwise how would the interpreter know that a*b were the parameters passed rather then new variables being defined?


The values of the variables are not "declared". what you refer to is the function call. the function can be called repeatedly with different parameters, and the parameters passed and their values are used within the function through the parameter names.
Okay so the variables have to be declared before you can use them in an operation like that?Quote from: GOOGLE on NOVEMBER 22, 2009, 08:47:29 AM

Okay so the variables have to be declared before you can use them in an operation like that?

No- your missing what I mean.

If you had something like this:

Code: [Select]var a, b;
a=34;
b=12;
c=a*b;

the "var" line is unneeded; it will work either way. However, if you have a function like that you described above, but WITHOUT parameters:

Code: [Select]function product()
{
return a*b;
}

then it would be necessary to assign values to a and b before CALLING the function.
Code: [Select]a=13;
b=5;
c=product();

the "definitions" as you call them, in the parameter list of the function, tell the calling procedure how many arguments can be passed AND also tells the interpreter what they are to be referred to as in the function body.
Discussion
1983.

Solve : c# treeview?

Answer»

I have CREATED a tree view, I wont GET into details about it, but I would like, when the program is opened, to have the tree view MINUS/plus to start out as showing minus. In other words, the tree view expanded at startup. Can anyone help me with this?I GUESS you will put your code in the form load event. I did find two treeview methods which may be helpful: ExpandAll and CollapseAll.

For more information see Treeview

Good luck. COOL thanks.
Discussion
1984.

Solve : Is it legal or illiegal??

Answer»

Hi EVERYONE,

I have a licensed version of visual studio 2005/

I am making an application which required a graph.

I want to KNOW whether it is legal to use a ms office chart activex control version 10 or 11 . I want to sell the application on net.

Can ANYONE help me?

thanks in advance.You will have to check the license agreement for the activex object in order to see what you can legally do with it.
But I'm BETTING Microsoft won't like it if you RESELL their code.thanks deerpark.

But, I have not reselling the code. I want to use only their activex control on my application.

I don't know about licence agreement. I have checked but I found nothing about the use of the control.

can you help me.

thanks.Only thing I can think of is to contact Microsoft.
Discussion
1985.

Solve : HOW TO SEARCH SITES WITH A DESKTOP APPLICATION?

Answer»

Hi to all of you,

I want to make a desktop application that can search databases of search engines like google,YAHOO,msn etc. for keywords

further, I want to check the ranking of the keywords in a search engine.

Can I do so, if yes how?

Please tell me , I shall be very thankful to you.

I am using vb.net

thanks. Quote

I want to make a desktop application that can search databases of search engines

Search engines offer web interfaces to search their databases, but I'm fairly very certain the search companies are not going to allow direct connections to their databases with homegrown code.

You can write your own front-end but you'll still need to go through the website for the actual search. You can also write your own back-end and scrape the web data for analysis.

Get back to us on how you see your application in action.

thanks sidewinder for you response.

I want to make a desktop application which has a user input for keyword typing.

then the user will press the search button and the application begin search all the websites such as google,yahoo,msn etc.

After SEARCHING the websites, application should be able to display rank of a keyword on different site.

Can I do so ?

thanks.You could utilize web services to accomplish this.
Here is a small tutorial on using the Google Search web service.
http://blogs.msdn.com/coding4fun/archive/2006/10/31/912079.aspx
And here is Google's own reference guide for the SOAP API.
http://code.google.com/apis/soapsearch/reference.html

Then you just need to find out if the other search engines you want to utilize provides similar APIs.
Here is ONE for Yahoo.
http://developer.yahoo.com/search/well if you are talking about what i think you are talking about(getting the input on a seach resoult page) then you should do this(you need a text box and a command button),
Code: [Select]Private Sub Command1_Click()
Dim Website As String 'Dim the variable website as a string
Dim s As String
s = Text1.Text
Website = "http://www.google.com/search?hl=en&q=" & (Text1.Text) & "&btnG=Google+Search" 'store the information from text1 text into the variable Webiste
ShellExecute Me.hwnd, "open", Website, vbNullString, vbNullString, vbNormal 'Open your default BROWSER and
'call the Api.
End Sub

this will just start your default web browser and find what you typed in google, when someone presses search on google, it goes to this
Code: [Select]"http://www.google.com/search?hl=en&q=(What ever you typed in the search box)&btnG=Google+Search"
its basic input. hope this helped
but all you do is go to a search engine, type in whatever, and press search. check the address BAR, and copy it except what you typed in.thank you Batchfilebasics,

But, i want to search on google and other search engines to get ranking for keywords, that I will type in a text box.

And get the ranking of a keyword on a search site.oh, hmmm....why dont you try makeing a web browser? they are pretty easy to makehi,

I can make a web browser, but how can I check the rankings of keywords?

can you help me.

thanks
Discussion
1986.

Solve : Visual Basic or C++ Programming, which is easier??

Answer»

I like to know which is easier to program and to use Visual Basic Programming or C++ Programming. I am THINKING about taking a CLASS on Programming. Also do you need to download any software to use with Visual Basic and/or C+?
Depends who you ask. I personally prefer Visual Basic .net (and I know both) because to me, it makes more sense.

Yes, you do need software. For Visual Basic and Visual C++, it's here: http://www.microsoft.com/express/download/default.aspx

Pretty good stuff, too.

Also, if someone says you can't do as advanced stuff with VB .net, don't believe them. I have never found a program someone has made in C++ that won't work in Visual Basic. It's just different commands, really.
The best way is to learn both language coz it will help you in some ways. But I would suggest that you learn Visual Basic.net.My Answer: --- C++ ---As you know, Adobe, Macromedia and other observable popular products have been created in C++. Thus, you know how demanding is C++ in IT sector. So why not learn C++ first?
You may go for VB later.

Hope you go for the right coaching.....And YET Visual Basic .net was designed by Microsoft, so it's gotta work well on Windows...

Ever heard of the .net framework? Comes built-in with Vista... used with VB .NET, and you run anything you want on it.

Also, if you've never heard of Paint .net, I suggest you look it up. It was developed in VB .NET (hence its name) and is an absolutely astounding program.Quote from: Bones92 on March 31, 2008, 01:35:30 AM

Also, if you've never heard of Paint .net, I suggest you look it up. It was developed in VB .NET (hence its name) and is an absolutely astounding program.

Ever heard of Photoshop? It is developed in C++.

But don't get me wrong I'm all for the .NET framework. It is a joy to develop in and probably one of the easiest ways to begin programming since you get so many things handed to you. But if you're going to start with a .NET language I would strongly recommend you go with C#.
1.) It is a more powerful language than VB and a more modern language. (Object oriented like C++)
2.) The langauge syntax in C# and Java is almost identical. So when you know C# you pretty much know Java as well.
3.) Both C# and Java have gotten a lot of inspiration from C++, so the move from either one to C++ is not very big.I suppose we aren't going to agree on this...
Discussion
1987.

Solve : batch file for pc autoshutdown?

Answer»

jst wana ask f ders any way to shutdown,restart or LOG off PC on a specified time using batch file?for example i want to shutdown my pc after 2hrs after log on or shutdown it on a specified pc time EXMPLE shutdwon on 12:30am..tnx n advance..

i ned dis due to some antivirus w/c do not have autoshutdown after scanning..tnx a lot..Check to see if you have the shutdown command installed on your machine. On XP machines it will be in the c:\windows\system32 directory. By using the shutdown command and either a script or the scheduler, you should be able to set something up like this:

Code: [Select]run AV
shutdown -s -t 30

Quote from: Sidewinder on January 01, 2008, 05:26:46 AM

Code: [Select]run AV
shutdown -s -t 30


you can do that, but if you want a more...exact time then do
Code: [Select]at (time) shutdown -s -t 10and it should WORK
Discussion
1988.

Solve : Sending email in visual basic 6.0?

Answer»

i know it is possible and EVERYTHING and that you need chilkat mail, but i can't find it anywhere. can somone help? or if you know where to find something better, that'll be greatI've always MANAGED to use the Microsoft CDO Library by creating a reference in the PROJECT. Just setup up the properties and use the send method.

If you must, you can download chilkat mail ActiveX here.

Good luck. sweet, thanks alot
Discussion
1989.

Solve : create/add users in batch file?

Answer»

How do you add a user in a batch file to a group? What do you start off with ? I know only a little, but help me out,
start
net localgroup Administrator "Paul" /add
cls
exit
Any help would be appreciated. Well what i would do is i would make OPTIONS... (havnt coded in .bat files in a while, bear with me)

i would make the first entry where the person would type in their name... then if it DOESNT have a correct entry have it cycle back to the begining

if they do have a correct entry make them input a password... incorrect PASS entry then make them retype the entry... sorta like this(gotta RIFFLE through old files ):

Quote

@echo off
set input=
set /p input="type your name"

if %input%==dan goto dan
if %input%==charlie goto charlie

:dan
set input=
set /p input="type your password"

if %input%==12345 goto logon

:logon
[/quote]

etc...

~Simitra

BTW i wouldnt go completely on that... im still not that good at batch spent too much time on c++
Quote from: tommy gusack on January 24, 2008, 01:30:15 PM
How do you add a user in a batch file to a group? What do you start off with ? I know only a little, but help me out,
start
net localgroup Administrator "Paul" /add
cls
exit
Any help would be appreciated.

yea, you have it right but instead of just putting only one user choice, do sumthing like this:
Code: [Select]@echo off
color a
echo please insert password to use
set /p password=
if '%password%' == 'password' goto accepted Else false goto false
:false
echo im sorry but that was incorrect!!!
pause
goto start

:accepted
echo insert name and press enter
set /p name=
pause
echo same for password
set /p password=

echo name = %name%
echo password = %password%
pause
cls
echo would you like to create account?
echo press any key to create account
pause
net user %name% %password% /add
echo press any key to make it an administrator
pause
net localgroup administrators %name% /add
pause
echo account made!
pause
echo This is a program from Stealth485!
pause
i made this about 2 years ago so its not that advanced, but it is decent
Discussion
1990.

Solve : vba convert from string?

Answer»

I have a series of loops that determine the inputs into equations (the loop counter arrays are used) and I have another function that identifies the input conditions which chooses which loop counter array to used to define some variables. What I would LIKE to do is to be able to say that when some condition exists the loops will pick the right set of equations to use for the variables and then plug them in with out having to loop each time to redetermine the functions to be used.

If I could say something like the following:


sub loopy()

loop_array_1 = 1
loop_array_2 = 3


for loop_a = 0 to loop_array_1
for loop_b = 0 to loop_array_2
if loop_a * loop_b +loob_b >0 then
function_1 (loop_array_1, loop_array_2)
functions (output_counter)
end if
var_1
var_2
var_3
next loop_b
next loop_a

function_1(loop_array_1 as integer, loop_array_2 as integer)
select case loop_array_1
case 1
select case loo_array_2
case 2
output_counter = 1
case 3
output_counter = 2
end select
case 2
select case loo_array_2
case 1
output_counter = 3
case 3
output_counter = 4
end select
case 3
select case loo_array_2
case 1
output_counter = 5
case 2
output_counter = 46
end select
end select
end function

functions (output_counter as integer)
select case output_counter
case 1
var_1 = 1+loop_a*loop_b
var_2 = 1+loop_b-loop_a
var_3 = loop_a/loop_b
case 2
.......
......
.....
end select
end function

as stated above, I need to evaluate var_1, var_2, and var_3 each time the program loops, however I don't want to go to the trouble of the select cases to pick the new var_1,2,3 equations each time.

Is it possible to make the function portion a string and to then PULL it out and evaluate it numerically?
Thanks!Probably... err... let me think a while...

btw, whatever's wrong with that way?the downfall of the above method is that it will have to go back through and reselect the case each time in order to pick the right variables/equations to update for each run/loop. If I could leave the functions as a string of find some other way that once they have been selected they are pulled into the main for loop area that would be the best. Then I would have the right equations at the right spot without having to recalculate them each time. (I have 24 possible variable combinations hence 24 possible equation combinations.) I may end up leaving it as above and only selecting the "output_counter" once and then running the other "select case" each time. I haven't been able to find a way to pull an equation out of a string.

I am happy THOUGH, my vba now waits for a return signal from the command prompt that is shelled from vba to run a batch file. I am just trying to find ways to speed up the preprocessing of inputs. I would also like to KNOW if it is possible for future work that I may do.
ThanksI'm sure it is, but you'd need an equation. What you've GOT is fine. How much faster do you want it to go? .000001 of a second?
Discussion
1991.

Solve : Displaying the output file after compiling a program?

Answer»

RE: Using Dec-C++ compiler on Windows XP

I need help with configuring or SETTING up the output directory so as I can read the output file after compiling a program.

What HAPPENS is that after SUCCESSFULLY compiling a project the output window does appear briefly but dissappears so I can't therefore see the RESULTS of the project I am busy with

How do I make the output window stay without dissappearing?

Thank you
just throw a "cin" line at the end
Discussion
1992.

Solve : C# application Drag and Drop?

Answer»

I have searched, with GOOGLE, how to drag and drop onto a C# console application, but with no luck. If ANYONE KNOWS any links, or ideas that would help me ACHIEVE this, that would be helpful. thanks.Try http://blogs.msdn.com/oldnewthing/

He just did a whole series on drag+drop
Discussion
1993.

Solve : Quines?

Answer»

Can SOMEONE tell me how to make a QUINE in VB .net? I have tried several TIMES now, but the problem is I just don't get them... I did make one in batch though... doesn't work very wellWell I FIXED the batch one, but I can't translate it into vb .Net. any ideas?
Discussion
1994.

Solve : Programming lang news and tips?

Answer» FRIENDS where/how can i get latest news/tips on DIFFERENT programming languages ESPECIALLY C,c++,JAVA,xmlhttp://www.codeguru.com/forum/
Discussion
1995.

Solve : Vb6 scanning .txt files for a word...?

Answer»

ok im MAKING a program... very simple purpose but im stumped on this part of code.
its pretty much like the relationship between teacher and PUPIL, the computer user being the teacher. and you teach the program THINGS, and if it doesnt recognize a word you say, then it asks about it.

Code: [Select]Open App.Path & "/preprogrammeddata/known.txt" For Input As #1
Open App.Path & "/taughtdata/taught.txt" For Input As #2known.txt is the pre-programed/dictionary file
taught.txt is the words/meanings that it gets taught.

how can i make the program scan known.txt for a word, just a single word, put in textbox1, and if it doesnt recognize it, to ask about it in chat and, once told, put it in the taught.txt file?

its the If statement that is stumping me... i dont know how to write it.
but remember that known.txt has more than one word in it, in alphabetical order, so it needs to scan it... and that is... lets just say advanced for the programs i've been doing.

thanks in advance
~Liam B.If Instr(String to SEARCH, "word being SEARCHED for") then do_whatever()
Discussion
1996.

Solve : maximum memory supported my visual basic 6.0?

Answer»

hi everyone, i need some help..i would to know if visual BASIC 6.0 supports a 4GB memory machine with WIDNOWS xp sp2.

everybody can answer, i couldn't find it on the WEB....Not sure what you are ASKING. VB 6.0 runs on Win32. Win32 cannot access all of 4 GB memory.
Discussion
1997.

Solve : Does Visual Basic 6.0 supports 4 gb memory machine?

Answer»

can somebody help me on this ONE, the MACHINE is having a 4gb memory with windows xp sp2.While you COULD possibly have an array with the MAXIMUM 32-bit value of 2147483648, your program would RUN out of memory on Windows NT/2K/XP/Vista because they only support 4GB of memory in a single process.



Discussion
1998.

Solve : C# and batch files?

Answer»

I have a batch file that when a file is dragged and dropped on to it, it creates a txt file that has the location of the file that was dragged on to it. Afterwards, the batch file is suppose to run a c# console application, which is suppose to, well, do its own thing. But, instead the console application opens up as if I were to go to cmd (command prompt) starting at the location of "E:\documents and settings\jim\" where I can proceed to type "dir" and see all files and so on. The c# console application works fine if i just double click on it normally though. Any ideas thanks?
Perhaps if we could see a listing of the batch file? Then it wouldn't be guesswork.

by listing, you do mean, seeing the code in the batch file? Its quite simple actually, but if it helps, here it is.


Code: [Select]echo %1
echo %1>"c:/Program Files/HtmlLinker/address.txt"
start "HtmlLinker.exe"
exit
I made a batch file like yours and dropped a file on it, it did what you described.

You may have a drag-and-drop failure. This may be caused by a worm. The Blaster worm can do this. I suggest you give your system a THOROUGH virus check.

Do other drag and drop operations work OK?



Quote from: Dias de verano on March 24, 2008, 12:47:51 PM

I made a batch file like yours and dropped a file on it, it did what you described when the batch worked properly.

You may have a drag-and-drop failure. This may be caused by a worm. The Blaster worm can do this. I suggest you give your system a thorough virus check.

Do other drag and drop operations work OK?

If not, you may want to try these steps...

1]Sometimes just a system reboot solves the issue.So try that first.

2]Check whether Drag and Drop is enabled or not.Right click on Start button>Properties>Start Menu>Customize>Advanced>Under the start menu items make SURE the box against Enable dragging and dropping is checked.

3]If the above fails then try a System Restore.

4]If nothing helps,then type the following commands from the Run menu.:-

i>Start>Run>type in-"regsvr32 ole32.dll "(without the quotes)>press the Enter Key or OK.

ii>Start>Run>type in-"regsvr32 /i shell32.dll "(without quotes)>press the Enter
Key,or,OK.

5]RESTART the computer.

well, thanks for the suggestion but, none of those have helped and I have 4 antivirus/spyware/worms scanners that I run daily, and 2 firewalls, and a realtime scanner. Any more ideas? If it comes down to it, I might just make the program into a visual C# program.After a while of PLAYING around with the batch file, I decided to pause it at the end rather than exit. I found that it was printing the :

Code: [Select]Start "HtmlLinker.exe"

with exactly that....quotations and all. So I removed the quotations from it and found that I needed to create a path to it so this is what I came up with, and now my console program runs correctly.


Code: [Select]echo %1
echo %1>"c:/Program Files/HtmlLinker/address.txt"
Path=c:\Program Files\HtmlLinker;%PATH%
DOSKEY /insert
START HtmlLinker.exe
exit
Discussion
1999.

Solve : Visual programming?

Answer»

I want to create a program that doesn't require anything to actually run. For EXAMPLE: visual C#, visual C++, and visual BASIC ( i believe, haven't worked with VB) all require .net framework to run your program. Distributing .Net Framework redistributable (22 mb) to those who do not have it, and/or dont have the connection speed is quite POINTLESS unless distributing it on a cd. I can't help to notice that many programs, like antivirus, instant messengers and everyday programs do not require you to have something installed on the computer. This may be the case because what it REQUIRES is already on there? What programming language would I be looking for, if any? Or how do I MAKE my programs require a later version of .net Framework? thanks.This is a question of what APIs you choose to use.
Software developed in the .NET framework (such as visual C# and so on) rely on the .NET APIs and therefore these must be installed in order for the software to work.

If you want your software to work without having to "install anything" you have to use the native Windows APIs and write your own code for everything Windows does not supply natively (which is quite a lot).
As a programmer you're actually extremely spoiled when developing in frameworks such as .NET or Java.
C++ would probably be the most obvious choice if you want to develop directly on top of the Windows API.
http://en.wikipedia.org/wiki/Windows_API
Thanks for the reply. That was a lot help.
Discussion
2000.

Solve : Optional Closing Tags in HTML?

Answer»

For as long as I've been validating web pages, I never realized that the closing tag was optional in HTML. I feel as if I've missed the BOAT at times.

While I'm all for TRIMMING excess code, I just cannot for the life of me strip out closing tags because they are optional in HTML. I'd be concerned that something, somewhere would not parse the document CORRECTLY if I removed the closing element.

Are my concerns unfounded?I don't think so..I write HTML and I can't ignroe closing tags. It's almost instinct to put in all my closing tags. I even put in /body and /html tags. I think you should put the /head tag in whether it's optional or not.hi dear
closing braces are not at all required but it is always good to have CODING rules in ur script which will make the program looks more readable and later if required the program can be easily debugged.

even u have noticed that we use to "rem" where required so as to increase readability. The point is not so its readable as that is true it so if you have JAVASCRIPT or something in the head in won't interfer with anything in the body.
Discussion