On Fri, Oct 27, 2006 at 10:23:16PM +0200, Andre Poenitz wrote: > On Thu, Oct 26, 2006 at 10:01:06PM +0200, Enrico Forestieri wrote: > > On Thu, Oct 26, 2006 at 02:21:41PM +0200, Abdelrazak Younes wrote: > > > Jean-Marc Lasgouttes wrote: > > > >>>>>>"Abdelrazak" == Abdelrazak Younes <[EMAIL PROTECTED]> writes: > > > > > > > >>> I thought Abdel tested that with qt4. > > > > > > > >Abdelrazak> LyX-1.4/qt3 behaves exactly the same with this file. > > > > > > > >So this is a general problem with lyx-qt on windows, right? > > > > > > I would rather say with lyx-mathed on windows. > > > > I would more correctly say that it is a problem with the Qt library > > implemented directly using the Windows API, as the Qt library which > > goes through the X11 API does not have this problem, even if it runs > > on Cygwin which in turn runs on top of Windows. > > Qt4/Win does not use much of the Windows API. It basically does > everything by itself and blits the result as pixmap to the widget. > > > I have always stated that LyX/Qt/X11 is more snappy than LyX/Qt/Win. > > But this is true for 1.4, as LyX 1.3, using the same Qt/Win version, > > was indeed a little faster than LyX/Qt/X11. > > Qt3/Win uses the native API.
LyX 1.5 was basically performing the same with both Qt3/Win and Qt4/Win. So, from what you say, its poor performance is related to something that is being done differently with respect to 1.3. Indeed, even using Qt/X11, scrolling of the document attached to bug 2900 is difficult in 1.4 and 1.5, as opposed to 1.3, where there is no problem. -- Enrico
