[单项选择题] 假定编写了如下事件过程: Private Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single, Y A
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[单项选择题] 假定编写了如下事件过程: Private Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single, Y As Single) If Button=2 ThenPrint "aaaa" End If End Sub 程序运行后,为了在窗体上输出“AAAA”,应按下的鼠标键为
A.左键
B.右键
C.同时按下左、右键
D.按什么键都不显示
参考答案: