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(Button As Integer,Shift_As Integer,X As Single,Y As Single) Print Up End Sub
A.DownUpClick
B.CfickDownUp
C.DownClickUp
D.UpDownClick