Hello I need some help to implement a QT Window to draw some OpenGL in an python-GTK2 application. In the GTK application, I have a push button which will launch an OpenGL scenery (In a QT window). I should be able to close the OpenGL Window and to reopen it as many times as I want, without exiting the GTK application.
I used the code found here : http://www.siafoo.net/snippet/316 , but rewritten for my app (as I call main() from the GTK part) : def main(): app = QtGui.QApplication(['Spiral Widget Demo']) window = SpiralWidgetDemo() window.show() app.exec_() My code works perfectly under Mac OS X with python 2.7 and the pyQT port from macports. But under Ubuntu 10.10 with python 2.6.6 I get a segmentation fault if I try to reopen the window. What I do : - Open OpenGL Window (QT) - Close it with the X - Reopen it - SegFault here Why is there a difference between the OS X and ubuntu packages ? I have a backtrace (made with dgb) of the segfault. It seems that the memory is not cleared when I close the window. I don't want to use sys.exit because it will also close my GTK app. #0 0x0000000000497d72 in ?? () #1 0x0000000000499642 in PyErr_WarnEx () #2 0x00007ffff536d274 in ?? () from /usr/lib/pymodules/python2.6/gtk-2.0/gobject/_gobject.so #3 0x00007ffff5a0bb89 in g_logv () from /lib/libglib-2.0.so.0 #4 0x00007ffff5a0bfa3 in g_log () from /lib/libglib-2.0.so.0 #5 0x00007fffe1cde39e in ?? () from /usr/lib/libQtGui.so.4 #6 0x00007fffe1cdf06e in ?? () from /usr/lib/libQtGui.so.4 #7 0x00007fffe1ce4036 in ?? () from /usr/lib/libQtGui.so.4 #8 0x00007fffe1cc78ee in QGtkStyle::QGtkStyle() () from /usr/lib/libQtGui.so.4 #9 0x00007fffe1c4dda3 in QStyleFactory::create(QString const&) () from /usr/lib/libQtGui.so.4 #10 0x00007fffe193cfa7 in QApplication::style() () from /usr/lib/libQtGui.so.4 #11 0x00007fffe1945be5 in QApplicationPrivate::initialize() () from /usr/lib/libQtGui.so.4 #12 0x00007fffe1945d01 in QApplicationPrivate::construct(_XDisplay*, unsigned long, unsigned long) () from /usr/lib/libQtGui.so.4 #13 0x00007fffe1946d91 in QApplication::QApplication(int&, char**, int) () from /usr/lib/libQtGui.so.4 #14 0x00007fffe291f654 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtGui.so #15 0x00007fffe291f73d in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtGui.so Thank you in advance if somebody has any explanation why this happens and how to close the window properly and free up memory/threads which are perhaps still open. Michka
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