执行下列程序后,鼠标单击窗体,输出结果为 Private Sub Form_Click() Print 'Click' End Sub Private Sub Form_mouseDown(Button As Integer,Shift As Integer, X As Single, Y As Single) Print 'Donw' End Sub Private Sub Form_MouseUp(ButtonAsInteger,Shift As Integer, X As Single, Y As Single) Print 'Up' End Sub