[PyKDE] Program crash using QCanvasRectangle

[ian reinhart geiser]

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I have found PyQt is very unstable for windows, you have to really make sure 
that Python, libsip, Qt and pyqt are all compiled with the same options.  I 
spent a good part of a week hacking arround here but now I have everything 
working.  I get a few crashes in libsip every so often, but I am still using 
Pre2 of everything since it is such a pain to try to install it.  I have 
noticed though that if you use anything that relates to libqtc.lib you run 
into problems real fast.  I am wondering if there are a few unexported 
symbols that are causeing runtime problems.  Considering I fought for over a 
week just to get my own QDialog derived class to work on windows, I would not 
be surprised if some more research needs  to go into the libqtc.dll...

Meanwhile check to see that python, libsip and qt are all compiled with -MD in 
the cl line.  This fixed most of my problems.

- -ian reinhart geiser

On Friday 12 April 2002 04:46 pm, Kaercher, Joerg wrote:
> Hi,
>
> I have installed PyQt-3.0 (patch level 4; Qt 3.0.3; MS Visual Studio 6)
> under Windows 2K. Using the QCanvas classes I discovered that calling the
> brush() method in QCanvasRectangle causes the whole application to crash.
> Here is an example program:
>
> import qt
> import qtcanvas
> import sys
>
> a=qt.QApplication(sys.argv)
>
> c=qtcanvas.QCanvas(256,256)
> v=qtcanvas.QCanvasView(c)
>
> list=[]
> for n in range(0,100,10):
>         list.append(qtcanvas.QCanvasRectangle(10+n,10+n,50,50,c))
>         print 'pen()'
>         print list[-1].pen()
>         print 'brush()'
>         print list[-1].brush()
>         print 'show()'
>         list[-1].show()
>
> a.setMainWidget(v)
> v.show()
> a.exec_loop()
>
> Did anybody else have the same problem?
>
> Joerg
>
>
>
>
> _______________________________________________
> PyKDE mailing list    PyKDE at mats.gmd.de
> http://mats.gmd.de/mailman/listinfo/pykde
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