"4.8.4" () 
QPushButton(0x8fcbab8, name = "B") QMouseEvent(MouseButtonPress, 1, 1, 0) 
PRESSED "B" 
QPushButton(0x8fcbab8, name = "B") QMouseEvent(MouseButtonRelease, 1, 0, 0) 
RELEASED "B" 
CLICKED "B"