Slot function's concurrent multiple executions

[wysota]

"you are execing the dialog while already in exec".. I don't understand this. The mentioned constructor is of the mainwindow and messagebox is a member of the mainwindow and slotFunction corresponds to a pushbutton in the mainwindow. MessageBox->setWindowModality(Qt::ApplicationModal) takes effect only when the messagebox's parent is set to the calling widget.

There is an article on this on one of the KDE blogs.