drawing in Qt3 seems to have become incredible slow :-(

Klas Kalass klas.kalass at gmx.de
Sat Aug 10 10:14:30 BST 2002

Am Samstag, 10. August 2002 11:41 schrieb Alexander Neundorf:
> Hi,
> I just compared an old Qt1 app with a Qt3 app.
> The Qt 1 app has a dialog with 28 widgets, the Qt 3 app approx. the same
> number.
> If the Qt1 app window becomes visible (if it was hidden behind another
> window), it is *immediately* ready, I don't see the redrawing.
> Now the same for the Qt3 (KDE3) dialog: at first the formerly hidden part
> is drawn in the background color (immediately), and after a moment of
> "thinking" the widgets are drawn, beginning at the bottom of the dialog up
> to the top of the dialog. I.e. I can recognize which widgets are drawn
> first and which are drawn last.
> A K6/200 should be able to redraw windows immediately, so Qt3 is incredibly
> slow :-(
Which widget style?

> One thing: the Qt 1 app isn't i18n'd, but once the widgets are created this
> shouldn't matter.
> So, is it the unicode, or the richtext everywhere, or ... ?
> This makes Qt3/KDE 3 app feel really slow. I can't understand how people
> can claim that KDE3 has become snappier than KDE 2. KDE 2 was ok on this
> box, KDE 3 feels worse :-(
> Bye
> Alex

More information about the kde-core-devel mailing list