> For things like shaped windows you may get
> hundreds of Expose events for a single window movement.
You mean I can have polygonal-shaped windows in X11? That would be
pretty cool! :-)
> If you think
> you can really optimize it by drawing each rect separately then you
> can handle each event. If that's not realistic, then you should
> throw away all events except for the zero-count event and draw
> the whole thing when you get it. Alternatively you can collect the
> bounds of the nonzero-count events and draw the bounds when you
> get to the zero-count event.
So, a zero-count event means that the nonzero-count events are finished
(and whatever event generated them - moving, resizing, raising etc.), right?
I mean that some event (moving, ...) can generate a hole string of
nonzero-count Expose events, terminated by a zero-count Expose event. Am I
any close to the truth?
And if I want to redraw only the area that needs to be redrawn (not the
entire window), all I have to do is union all those rectangles from all the
nonzero-count Expose events, right?
Dany.
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