def button_qopen_click(self, event): MyBaseFrame.qopen_click(self, "Qtractor projects|*.qtr", [self.button_qbackup, self.button_qsave])
def button_qopen_click(self): MyBaseFrame.qopen_click(self, [("Qtractor projects", "*.qtr")], [w.button_qbackup, w.button_qsave])