[单项选择题] 编写如下事件过程: Private Sub Form_ MouseDown (Button As Integer, Shift As Inte

[单项选择题] 编写如下事件过程:

Private Sub Form_ MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single)

If Shift = 6 And Button = 2 Then

Print “Hello”

End If

End Sub

程序运行后，为了在窗体上输出“Hello”，应在窗体上执行以下______ 操作。

A．同时按下Shift键和鼠标左按钮．

B．同时按下Shift键和鼠标右按钮

C．同时按下Ctrl、Alt键和鼠标左按钮

D．同时按下Ctrl、Alt键和鼠标右按钮

D