Catching exceptions with Qt

[The_Fallen]

Hi,

in my Qt app I use exceptions for the error handling. Everything works fine, except for those exceptions that I forgot to catch directly. In those cases the app crashes and has a console output like this:

Invalid parameter passed to C runtime function.
Invalid parameter passed to C runtime function.

So I assume the problem is that the exception is going through some Qt code and something goes wrong there. Now I thought: Ok, then I'll just catch all exceptions at the top-most level, i.e. the main function, like this.

try {
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}
catch (...) {
    qDebug() << "CRASH!";
}

try {
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}
catch (...) {
    qDebug() << "CRASH!";
}

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Unfortunately this doesn't seem to make a difference, the app still crashes. What am I doing wrong?

Cheers,
fallen