要使得在按下鼠标右键时，激发mousedown事件，可以设置此事件中的button参数为()A.0B.1C.2D.4
要使得在按下鼠标右键时，激发mousedown事件，可以设置此事件中的button参数为(
)
A.0
B.1
C.2
D.4
相关考题：
设已经在菜单编辑器中设计了窗体的快捷菜单，其顶级菜单为Bt，取消其“可见”属性，运行时，在以下事件过程中，可以使快捷菜单相应鼠标右键菜单的是A．Private Sub Form_MouseDown(Button As Integer, Shift As Integer,_ X As Single, Y As Single) If Button=2 Then PopupMenu Bt, 2 End SubB．Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) PopupMenu Bt End SuhC．Private Sub Form. MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) PopupMenu Bt,0 End SubD．Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) If (Button=vbLeftButton) Or ( Button=vbRightButton) Then PopupMenu Bt End Sub
设已经在“菜单编辑器”中设计了窗体的快捷菜单，其顶级菜单为Bs，取消其“可见”属性，运行时，在以下事件过程中，可以使快捷菜单响应鼠标右键菜单的是A．Private Sub Form_MouseDown(Button As Integer，Shift As Integer,_X As Single，Y As Single) If Button=2 Then PopupMenu Bs，2 End SubB．Private Sub Form_MouseDown(Button As Integer，Shift As Integer,_X As Single，Y As Single) PopupMenu Bs End SubC．Private Sub Form_MouseDown(Button As Integer，Shift As Integer,_X As Single，Y As Single) PopupMenu Bs，0 End SubD．Private Sub Form_MouseDown(Button As Integer，Shift As Integer,_X As Single，Y AS Single) If(Button=vbLeftButton)Or(Button=vbRightButton)Then PopupMenu Bs End Sub
在对象的MouseDown和MouseUp事件过程中，当Button参数的值为1、2、4时，分别代表按下鼠标 ______。A．左键、中间键和右键B．左键、右键和中间键C．中间键、左键和右键D．左键、右键和同时按下左右键
在对象的MouseDown和MouseUp事件过程中，当Button参数的值为1、2、4时，分别代表按下鼠标的 ______。A．左键、中间键和右键B．左键、右键和中间键C．左键、右键和同时按下左右键D．中间键、左键和右键
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