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Why Do I Get The Error “org.eclipse.swt.swtexception: Invalid Thread Access”? |
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Answer» SWT implements a single-threaded UI model often called apartment threading. In this model, only the UI-thread can INVOKE UI operations. SWT strictly enforces this RULE. If you try and access an SWT object from outside the UI-thread, you get the exception “org.eclipse.swt.SWTException: Invalid thread access”. The FOLLOWING code sets the text of a label from a background thread and waits for the operation to COMPLETE: display.syncExec( new RUNNABLE() { public void run(){ label.setText(text); } }); SWT implements a single-threaded UI model often called apartment threading. In this model, only the UI-thread can invoke UI operations. SWT strictly enforces this rule. If you try and access an SWT object from outside the UI-thread, you get the exception “org.eclipse.swt.SWTException: Invalid thread access”. The following code sets the text of a label from a background thread and waits for the operation to complete: display.syncExec( new Runnable() { public void run(){ label.setText(text); } }); |
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