1.

How Functions Are Imported And Exported In A Module?

Answer»

Importing functions - Importing a FUNCTION from other module is done by placing the function entry in function list of .IDATA section. MS VC++ compiler has specific keyword __declspec(dllimport) to import a function or VARIABLE from an external module.

Syntax:

Functions: __declspec(dllimport) ;
Variables: __declspec(dllimport) ;

Example:

__declspec(dllimport) INT extrn_var;
__declspec(dllimport) int Function1(int a);

EXPORTING functions - Exporting a function from a module is done by placing the function entry in function list of .EDATA section. MS VC++ compiler has specific keyword __declspec(dllexport) to export a function or variable from a module.

Syntax:

Functions: __declspec(dllexport) ;
Variables: __declspec(dllexport) ;

Example:

__declspec(dllexport) int extrn_var;
__declspec(dllexport) int Function1(int a);

Importing functions - Importing a function from other module is done by placing the function entry in function list of .IDATA section. MS VC++ compiler has specific keyword __declspec(dllimport) to import a function or variable from an external module.

Syntax:

Functions: __declspec(dllimport) ;
Variables: __declspec(dllimport) ;

Example:

__declspec(dllimport) int extrn_var;
__declspec(dllimport) int Function1(int a);

Exporting functions - Exporting a function from a module is done by placing the function entry in function list of .EDATA section. MS VC++ compiler has specific keyword __declspec(dllexport) to export a function or variable from a module.

Syntax:

Functions: __declspec(dllexport) ;
Variables: __declspec(dllexport) ;

Example:

__declspec(dllexport) int extrn_var;
__declspec(dllexport) int Function1(int a);



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