How can I disable Alt + F4 window closing using Qt?

Question

I\'ve disabled X button in Qt from my dialog using this line:

myDialog->setWindowFlags(Qt::Dialog | Qt::Desktop)
         


        

Answer 1

The code below prevents a dialog close when pressed Alt+F4, [X] or Escape, but not by calling SomeDialog::close() method.

void SomeDialog::closeEvent(QCloseEvent *evt) {
    evt->setAccepted( !evt->spontaneous() );
}   

void SomeDialog::keyPressEvent(QKeyEvent *evt) {
    // must be overridden but empty if the only you need is to prevent closing by Escape
}   

good luck to all of us ;)