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Stay On Top

Posted on 2001-06-04
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Last Modified: 2010-04-06
Hi All,

How do I prevent a form from flicking when I change its type from 'normal' to 'StayOnTop'?

Regards,
Dion.
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Question by:Diono
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fva earned 150 total points
ID: 6152085
VCL doesn't handle too well the FormStyle Change because it needs to support all possible cases.

Instead of changing the style by FormStyle, use:

SetWindowPos(Handle,HWND_TOPMOST,0,0,0,0,SWP_NOMOVE or SWP_NOSIZE or SWP_NOACTIVATE);

when going topmost and

SetWindowPos(Handle,HWND_NOTOPMOST,0,0,0,0,SWP_NOMOVE or SWP_NOSIZE or SWP_NOACTIVATE);

when returning to normal state.

HTH,
F.
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