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Re: Strangeness with ScrollRect and QDFlushPortBuffer

On Friday, May 16, 2003, at 12:42 AM, Larry Gerndt wrote:

Now here's the strangeness: When the window is located near the top of the
screen, the slide is seen to be nice and zippy. But if I move the window
close to the bottom of the screen, it is much slower. In fact, there is a
continuum: the closer the window is to the bottom of the screen, the slower
the slide effect is.

It's probably because CoreGraphics synchronizes flushes to the screen with the CRT beam, and it takes longer for the beam to get to the bottom of the screen, so you have to wait longer between each flush for the beam to pass by that location before the next flush can occur.

I'm not sure if there's a way to avoid this, maybe Haroon or Joseph can comment.

-eric
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 >Strangeness with ScrollRect and QDFlushPortBuffer (From: Larry Gerndt <email@hidden>)



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