I'm making a window which captures a screen image then applies a filter to it
for drawing effects (like the menus in the Dock). The problem I'm having is I
can't be sure when anything in the screen changes underneath it changes so I
don't know when to update the screen image.
Are there any notifications I could get that would tell me if screen pixels
changed that were within a certain rect on screen? Thanks.
Regards,
Ryan Joseph
thealchemistguild.org
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