QSA exceptions

[seneca]

When a qsa script calls a qt method, is it possible for the c++ method to throw an excepion which then can be catched by the script?

example:

// QSA Script
try {
    ...
    Application.object.property = 10;
    ...
}
catch ( e ) {
    if (e = "some error") {
        // do somesthing
    } else {
        // do something else
    }
}

// QSA Script
try {
    ...
    Application.object.property = 10;
    ...
}
catch ( e ) {
    if (e = "some error") {
        // do somesthing
    } else {
        // do something else
    }
}

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// qt method
MyObject::setProperty(int value)
{
    ...
    if (value > 2) throw QString("some error");
    ...
}

// qt method
MyObject::setProperty(int value)
{
    ...
    if (value > 2) throw QString("some error");
    ...
}

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[e8johan]

I don't think that QSA supports exceptions at all. And Qt, in general, does not make use of C++ exceptions.

[seneca]

QSA supports exceptions, and they can be detected in Qt by the QSInterpreter::hasError and errorMessage methods. There also are methods as QSInterpreter::throwError to throw an exception from Qt into QSA.

However what I am looking for is a way to throw an error within a Qt method, where I dont know if it was called by a script or c++. So there should at least exist a way to detect within script that a called C++ method has thrown an exception. But maybe it needs QSA wrappers for every Qt class which catch the C++ exception and then do a QSInterpreter::throwError.