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。