QMessageBox in initializeGL calls initializeGL one more time

[DIMEDROLL]

Thanks! Nice article and solution.

void MyGlWidget::initializeGL() {
    try {
        throw std::exception();        
    } catch(...) {        
        getExceptionMessage(&exception_msg_);
        QMessageBox *msgbox = new QMessageBox(QMessageBox::Warning, 
                                              "Exception", 
                                              exception_msg_, 
                                              QMessageBox::Ok, 
                                              this);
        msgbox->open(0, 0);
    }
}

void MyGlWidget::initializeGL() {
    try {
        throw std::exception();        
    } catch(...) {        
        getExceptionMessage(&exception_msg_);
        QMessageBox *msgbox = new QMessageBox(QMessageBox::Warning, 
                                              "Exception", 
                                              exception_msg_, 
                                              QMessageBox::Ok, 
                                              this);
        msgbox->open(0, 0);
    }
}

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Don't forget to use "new QMessageBox", because "QMessageBox msgbox;" will be deleted on scope exit. open() doesn't block the execution.