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Large image slow refresh transparency control


I need to put a very large image as background (1030px X 774px) on the
main window of my application. Also, on this window I need to add
transparent Usercontrol, Panel and Label.

Every time I need to refresh or replace a Usercontrol, the redraw is
doing very TOO slow and there some flickering... I try to activate the
double buffering but without success. Same refresh speed.

I try to realize the same application using MFC, the refresh was
really more fastest. I can say Perfect ! Why I cannot get similar
performance using .NET C# ? Beacause we don't have enough time to
create the project using MFC.

Here is a link to an exemple of my problem.
Try to move another window over my application and minimize it after.
Check how it too slow to refresh transparent control

Thanks for you help
Nov 16 '07 #1
0 1291

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