def event(self, event):
     if (event.type() == QEvent.KeyPress) and (event.key() == Qt.Key_Space):
         self.spacePressed.emit()
         return True
     return QTreeWidget.event(self, event)
 def event(self, event):
     if (event.type()==QEvent.KeyPress) and (event.key()==Qt.Key_Space):
         self.spacePressed.emit()
         return True
     return QTreeWidget.event(self, event)