QMdiArea Crash Segmentation fault



  • Hi, i have an application built on python and PyQt with many forms, and i just switched it from the old QWorkspace to QMdiArea.

    i am openning forms with this code:
    @def addSubWindow(self, form):
    new_sub = QMdiSubWindow()
    new_sub.setWidget(form)
    new_sub.setAttribute(Qt.WA_DeleteOnClose)
    self.mdi.addSubWindow(new_sub)
    form.show()@

    and when the form is closed it coles this function:
    @def formClosed(self):
    window = self.mdi.activeSubWindow()
    self.mdi.removeSubWindow(window)@

    the problem is when i open lots of windows and then closing them and then reopen the system crashes with out an error, it happens at random not always with the same form.

    i run it with gdb and it gave me the following:

    @Program received signal SIGSEGV, Segmentation fault.
    0x618945a9 in QtGui4!?takeAt@QBoxLayout@@UAEPAVQLayoutItem@@H@Z ()
    from c:\python\python27\lib\site-packages\PyQt4\QtGui4.dll@

    i am working on windows 7 Python 2.7.3, Qt 4.8.4, PyQt 4.9.6


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