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Re: kool
by KDE on Tuesday 26/Aug/2003, @06:24

> And lastly, I really hope those double buffered widgets aren't going to make Qt4 slower.. (like happened with Gtk2)

The problem is that with Qt 2 and beyond, half of the widgets are double buffered and half of them are not. I still see a lot of flicker in things like menus, but little in terms of things like text edits.

I think consistancy is good approach here. Also, remember that flicker is also an accessability issue, since a lot of people (est. 12.5% of the population) get headaches from seeing flicker on CRT screens. Using a LCD will help, but not everyone can afford one yet.

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Re: kool
by whatever on Tuesday 26/Aug/2003, @07:21

>> The problem is that with Qt 2 and beyond, half of the widgets are double buffered and half of them are not. I still see a lot of flicker in things like menus, but little in terms of things like text edits.

Yeah, I've noticed it when resizing windows with scrollbars in it.. usually gives some very bad looking white flashes (most themes don't set the background color to a sane value I guess?)

>> I think consistancy is good approach here. Also, remember that flicker is also an accessability issue, since a lot of people (est. 12.5% of the population) get headaches from seeing flicker on CRT screens. Using a LCD will help, but not everyone can afford one yet.

I'm still getting headaches when seeing flicker on my LCD..

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Re: kool
by Lee on Tuesday 26/Aug/2003, @07:44

That's an entirely different kind of flicker from the refresh rate/interlace problems which CRTs have. The 'update flicker' of GUIs is just... annoying :)

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