On 13.01.12 15:09:06, Marc Gronle wrote: > Hello everybody, > > I am developing a C++/Qt Application, where we integrated python as scripting > engine. I would like to offer the possibility to write PyQt-Scripts in order > to generate user-defined interfaces. > > In the present case, the python interpreter runs in its own thread within the > C++-framework. If I execute the following demo script in Debug-mode (Visual > Studio, Windows 7) > > ------- > from PyQt4 import QtCore, QtGui > app =QtGui.QApplication([]) > ... (create window, show it...) > app.exec_() > ------- > > it works (even if python is executed in a second thread). However in > Release-mode the line app=QtGui.QApplication([]) crashes with the warning > > WARNING: QApplication was not created in the main() thread.
I don't think this will work, QApplication only supports a single instance per process (the C++ one) and even if creating another works sometimes you may run into crashes, weird behaviour etc. In addition you'd need to integrate the event-loops of the two QApplications somehow. Did you try just creating a QPushButton and calling its show() function? Another option might be to use the multiprocessing module to run the plugins as separate processes, but of course that makes communication a bit more involved. Andreas _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt