Re: Old scrolling bug

[Duane Clark]

Duane Clark wrote:
> Fundamentally, the problem is that the X events are handled out of 
> order, because X11DRV_EndGraphicsExposures stripped out particular 
> events (due to copying) without accounting for other pending events that 
> might be relevant (plain old exposure).

Well, that conclusion appears to not be quite correct. I stuck a 
XPending check at the end of X11DRV_EndGraphicsExposures to see whether 
there were any pending events, and there were apparently none. So I am 
not sure why the GraphicsExpose event is coming out before the regular 
expose event, since in real time, they occurred in the opposite order.