No special mouse is being used (Microsoft stuff),, and fresh install of the official Windows 7 64 bit (but running Qt 32 bit). It is the same thing with older Qt versions. I just think Windows 7 use a different scaling for mouse wheel events, compared to XP (I don't know for Vista). And I guess Qt should compensate for this.
Looking in my application, it seems the delta() value of the Qt mouse wheel event is about 3 times smaller under Windows 7 (very quick estimation). So, to get the same behaviour under XP and Windows 7, I would need to take this into account. But this should rather be the the job of Qt. If you take Qt demos such as Text Edit and Interview: no apparent problem, because the scroll step was already big under XP. But if you use Assistant, the problem is obvious here, too much wheel action for too less scrolling happening. Philippe On Tue, 20 Oct 2009 09:40:36 +0200 Richard <[email protected]> wrote: > Are you using the same version of Qt in both cases? Do you have a > special kind of mouse (meant for gaming etc, with higher resolution on > the wheel?) > > -Richard > > > > > On Oct 17, 2009, at 11:48 PM, Philippe wrote: > > > Scroll wheel scale or event rate seems to be different under Windows 7 > > compared to Windows XP. > > > > To see this: open Assistant and scroll with the mouse wheel: under > > Windows 7 you need to turn the wheel again and again to scroll a bit, > > while it works normally under XP. > > > > Philippe > > > > _______________________________________________ > > Qt4-preview-feedback mailing list > > [email protected] > > http://lists.trolltech.com/mailman/listinfo/qt4-preview-feedback > > _______________________________________________ > Qt4-preview-feedback mailing list > [email protected] > http://lists.trolltech.com/mailman/listinfo/qt4-preview-feedback _______________________________________________ Qt4-preview-feedback mailing list [email protected] http://lists.trolltech.com/mailman/listinfo/qt4-preview-feedback
