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Help with XEmptyRegion

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Themuppeteer

Themuppeteer

Programmer
Apr 4, 2001
449
BE
Hello,
can anyone tell me what XEmptyRegion does exactely ?
Does it look in a region for pixels other than the backgroundcolor?
Does it check all the regions made to see if there is collision ?
What does it do?

I want to use it so I can update my window optimal. If I don't overdraw anything by drawing somthing else,then I don't have to redraw also,I want to use XEmptyRegion to check wether I overdraw something or not.

thnx. The Muppeteer.

themuppeteer@hotmail.com

Don't eat yellow snow...
 
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