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Tip of the Day
Language: Pascal
Expertise: Beginner
Jun 6, 1997

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Gaining control after form is minimized

Question:
I have a Delphi app that displays a bitmap, and I control drawing on the canvas object as one might on a paper roadmap. This works fine. When I minimize the app down to the Win95 bar and then activate the program again, I want to gain control to refresh the drawing, since it is not part of the BMP file. I have tried all of the Tform event processing (for example, OnActivate) but without success .

Answer:
You can get a form to redraw itself by calling its Invalidate method. This will force a repaint of all the form's controls.

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