Hi, you can't use two QCoreApplication instances in a single application, I know. There's also a nice warning: https://github.com/qt/qtbase/blob/5.10/src/corelib/kernel/qcoreapplication.cpp#L795. The reason, I guess, has to do with the static variables used in QCA (?).
Now, however, please imagine the following scenario and please be assured that I am neither convinced by nor advising such an architecture: - Win32 based - Main Application uses Qt5 with QApplication - Shared library linked against Qt4 (Core) - Qt5-Application uses the library - This Qt4-linked library starts an Qt4-QCoreApplication (for being able to use Signal/Slots). What are the technical reasons why you should also not do that, if there are? ... because static variables do not count in that scenario, at least I think so. Thanks Lorenz _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
