Re: [PyQt] APPCrash on exit, Qt4 MainWindow
On Tue, 2 Jul 2013 07:52:08 -0500, Erik egu...@gmail.com wrote: Python 2.7.4x32, Qt 4.8.4 (4.10.2-py27)x32 on Windows 7 64-bit OS PC's (multiple machines) I'm having a reproducible APPCRASH (in QtGUI4.dll) on exit of any application I write that uses a QMainWindow and a menuBar, if the window contains 10 other widgets. If I remove widgets down below the threshold (10), app closes normally. Whether I write it by hand or in QTDesigner, but if I include a menubar, blank or otherwise, App does not close properly in Windows resulting in a 'close program' Windows dialog. This happens on all 3 of my Windows 7 boxes here, but works fine in a instance of Windows XP on an older machine. (Same PyQt/Python versions) An example with code would be I create a QMainWindow in QT Designer, put 12 widgets of any combination on it. (In this example I added a menu bar in my code, but works the same (crash) if I add it in QTDesigner. import sys from PyQt4 import QtGui import ui_mainwindow as UIMW class MainWindow(QtGui.QMainWindow, UIMW.Ui_MainWindow): def __init__(self): super(MainWindow, self).__init__() self.setupUi(self) # MenuBar testing self.menubar = self.menuBar() menu = self.menubar.addMenu(Test) app = QtGui.QApplication(sys.argv) window = MainWindow() window.show() sys.exit(app.exec_()) As long as my Ui_MainWindow has 10 widgets + menuBar, I get: Problem Event Name:APPCRASH Application Name:python.exe Application Version:0.0.0.0 Application Timestamp:51606175 Fault Module Name:QtGui4.dll Fault Module Version:4.8.4.0 About 10% of the time, the first time I run the app, it will not crash until I run it again, click on some widgets, etc, and then exit. Try experimenting with sip.setdestroyonexit(). Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] APPCrash on exit, Qt4 MainWindow
Thanks for the direction Phil. I added sip.setdestroyonexit(False) to__init__ in my MainWindow class and that appears to have negated the crashing on the two apps I tried it on. Simply commenting that command out again caused the same apps to crash after adding it. So it's definitely the right direction. My limited knowledge of sip, do I risk any memory leaks or other unexpected behavior by bypassing the c++ destructor call this way? Are there any cleanup methods/calls I should add when setting setdestroyonexit to False? Thanks, -egus -- View this message in context: http://python.6.x6.nabble.com/APPCrash-on-exit-Qt4-MainWindow-tp5023351p5023518.html Sent from the PyQt mailing list archive at Nabble.com. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] APPCrash on exit, Qt4 MainWindow
On Wed, 3 Jul 2013 06:58:56 -0700 (PDT), egus egu...@gmail.com wrote: Thanks for the direction Phil. I added sip.setdestroyonexit(False) to__init__ in my MainWindow class and that appears to have negated the crashing on the two apps I tried it on. Simply commenting that command out again caused the same apps to crash after adding it. So it's definitely the right direction. My limited knowledge of sip, do I risk any memory leaks or other unexpected behavior by bypassing the c++ destructor call this way? Are there any cleanup methods/calls I should add when setting setdestroyonexit to False? It depends on what your application does after the interpreter exits. If it's just a Python script (ie. not embedded in a larger application) then the process is about to terminate anyway. This is the default behaviour of PyQt5. Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
