![[单项选择题] 假定已经在菜单编辑器中建立了窗体的d出式菜单，其顶级菜单的名称为a1，其“可见”属性为False，则程序运行后，可以同时响应鼠标左键单击和右键单击的事件过程是 ______ 。,第1张](/aiimages/%5B%E5%8D%95%E9%A1%B9%E9%80%89%E6%8B%A9%E9%A2%98%5D+%E5%81%87%E5%AE%9A%E5%B7%B2%E7%BB%8F%E5%9C%A8%E8%8F%9C%E5%8D%95%E7%BC%96%E8%BE%91%E5%99%A8%E4%B8%AD%E5%BB%BA%E7%AB%8B%E4%BA%86%E7%AA%97%E4%BD%93%E7%9A%84%E5%BC%B9%E5%87%BA%E5%BC%8F%E8%8F%9C%E5%8D%95%EF%BC%8C%E5%85%B6%E9%A1%B6%E7%BA%A7%E8%8F%9C%E5%8D%95%E7%9A%84%E5%90%8D%E7%A7%B0%E4%B8%BAa1%EF%BC%8C%E5%85%B6%E2%80%9C%E5%8F%AF%E8%A7%81%E2%80%9D%E5%B1%9E%E6%80%A7%E4%B8%BAFalse%EF%BC%8C%E5%88%99%E7%A8%8B%E5%BA%8F%E8%BF%90%E8%A1%8C%E5%90%8E%EF%BC%8C%E5%8F%AF%E4%BB%A5%E5%90%8C%E6%97%B6%E5%93%8D%E5%BA%94%E9%BC%A0%E6%A0%87%E5%B7%A6%E9%94%AE%E5%8D%95%E5%87%BB%E5%92%8C%E5%8F%B3%E9%94%AE%E5%8D%95%E5%87%BB%E7%9A%84%E4%BA%8B%E4%BB%B6%E8%BF%87%E7%A8%8B%E6%98%AF+______+%E3%80%82.png "[单项选择题] 假定已经在菜单编辑器中建立了窗体的d出式菜单，其顶级菜单的名称为a1，其“可见”属性为False，则程序运行后，可以同时响应鼠标左键单击和右键单击的事件过程是 ______ 。,第1张")
[单项选择题] 假定已经在菜单编辑器中建立了窗体的d出式菜单，其顶级菜单的名称为a1，其“可见”属性为False，则程序运行后，可以同时响应鼠标左键单击和右键单击的事件过程是 ______ 。
A．Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As Singl If Button = 1 And Button = 2 ThenPopupMenu al End If End Sub
B．Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As SinglPopupMenu a1 End Sub
C．Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As SinglIf Button = 1 Then PopupMenu a 1End If End Sub
D．Private Sub Form_ MouseDown(Button As Integer, _ Shift As Integer, X As Single, Y As SinglIf Button = 2 Then PopupMenu a 1End If End Sub
正确答案：B
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