Details
-
Bug
-
Resolution: Done
-
P3: Somewhat important
-
None
-
5.15.2
-
None
-
All
-
2c41d10a6a1f6fb7b496fc8c4c59e377b819f634 (pyside/pyside-setup/6.2) 7e198983b4768a547b2cd30e410bccb53368b842 (pyside/tqtc-pyside-setup/5.15.7)
Description
With a C++ Qt application that integrates a python interpreter (Autodesk Maya in this case), if a QApplication is constructed within Python code, the application will crash with the following stack trace:
Stack trace:
4 libshiboken2.cpython-37m-darwin.5.15.dylib 0x0000000140f9a18b MakeQAppWrapper + 43 5 libshiboken2.cpython-37m-darwin.5.15.dylib 0x0000000140f7e625 SbkQAppTpNew + 21 6 Python 0x00000001209110f2 type_call + 50 7 Python 0x00000001208c5db1 _PyObject_FastCallKeywords + 433 8 Python 0x0000000120985e84 call_function + 420 9 Python 0x000000012098302e _PyEval_EvalFrameDefault + 25342 10 Python 0x0000000120986b13 _PyEval_EvalCodeWithName + 2467 11 Python 0x000000012097cc54 PyEval_EvalCode + 100 12 libCommandEngine.dylib 0x000000011729d393 TpythonInterpreter::executeCommand(Tstring const&, bool, bool, TinterpreterResult*) + 707 13 libExtensionLayer.dylib 0x0000000116b26cdf QmayaCommandScrollField::createMimeDataFromSelection() const + 58639 14 libExtensionLayer.dylib 0x0000000116aaf3f2 TidleAction::preDoIdleAction(Tevent const&) + 18 15 libExtensionLayer.dylib 0x0000000116aaf317 TidleDeviceHandlerAction::serverDeleted(TclientServer*, TserverMsg const&) + 311 16 libExtensionLayer.dylib 0x0000000116ac77ee TeventHandler::setInterrupt() + 670 17 libExtensionLayer.dylib 0x0000000116ac666a TeventHandler::doIdles() + 458 18 libExtensionLayer.dylib 0x0000000116ac6373 TidleTrigger::removeClientHook(Tclient*, Tmetaclass*) + 3555 19 libQt5Core.5.dylib 0x000000011941e48f QObject::event(QEvent*) + 111 20 libQt5Widgets.5.dylib 0x0000000117b80f6a QApplicationPrivate::notify_helper(QObject*, QEvent*) + 266 21 libQt5Widgets.5.dylib 0x0000000117b82391 QApplication::notify(QObject*, QEvent*) + 497 22 libExtensionLayer.dylib 0x0000000116ab64b3 QmayaApplication::currentMousePos() + 771 23 libQt5Core.5.dylib 0x00000001193f3664 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 212 24 libQt5Core.5.dylib 0x0000000119458f8f QTimerInfoList::activateTimers() + 991 25 libqcocoa.dylib 0x0000000134bdd912 QCocoaEventDispatcherPrivate::activateTimersSourceCallback(void*) + 18 26 CoreFoundation 0x00007fff4faf5d31 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
In an earlier release of Autodesk Maya, integrating an earlier release of PySide2, I believe 5.12*, this returned similar to what you get when a second QApplication is constructed, if both are constructed from Python:
# Error: RuntimeError: file <maya console> line 4: Please destroy the QApplication singleton before creating a new QApplication instance. #
Is there a means of detecting when an existing QApplication exists that is constructed from C++, and to issue the same RuntimeError exception that is issued if two QApplication instances is constructed both from Python?
- I will confirm this.