设已经在菜单编辑器中设计了窗体的快捷菜单，某顶级菜单为a1，且取消其“可见”属性。运行时，以下( )事件过程可以使快捷菜单的菜单项响应鼠标左键单击和右键单击。

A．Private Sub Form_Mouse Down(Button As Integer,Shift As Integer,_X As Single,Y As Single) If Button=2 Then PopupMenu a1,2 End Sub

B．Private Sub Form. Mouse Down(Button As Integer,Shift As Integer,_X As Single,Y As Single) PopupMenu a1,0 End Sub

C．Private Sub Form_Mouse Down(Button As Imeger,Shift As Integer,_X As Single,Y As Single) PopupMenu a1 End Sub

D．Private Sub Form_Mouse Down(Button As Integer,Shift As Integer,_X As Single,Y As Single) If (Button=vbLetfButton)Or(Button=vbRightButton)Then PopupMenu a1 End Sub

[单选题]设已经在菜单编辑器中设计了窗体的快捷菜单，某顶级菜单为a1，且取消其“可见”属性。运行时，哪个事件过程可以使快捷菜单的菜单项响应鼠标左键单击和右健单击的事件过程是A．Private Sub Form_MouseDown(Button As Integer，Shift As Integer，X As Single，Y As Single) If Button=2 Then PopupMenu a1，2 End SubB．Private Sub Form_MouseDown(ButtonAsInte

[单选题]设已经在菜单编辑器中设计了窗体的快捷菜单,某顶级菜单为al,且取消其"可见"属性。运行时,可以使快捷菜单的菜单项响应鼠标左键单击和右健单击的事件过程是A．Private Sub Form_Mouse Down(Button As Integer, Shift As Integer,_X As Single,Y As Single If Button=2 Then PopupMenu al,2 End SubB．Private Sub Form_Mouse Down(Button As Int

[单选题]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，Sh

[单选题]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 Inte

[单选题]已知在菜单编辑器中设计了窗体的快捷菜单，其主菜单为a1，且取消其“可见”属性，如图2所示。运行时，以下（ ）事件过程可以使快捷菜单的菜单项响应鼠标右键单击。

[单选题]设已经在菜单编辑器中设计了窗体的快捷菜单，某顶级菜单为al，且取消其“可见”属性运行时，哪个事件过程可以使快捷菜单的菜单项响应鼠标左键单击和右键单击的

[单选题]假定已经在菜单编辑器中建立了窗体的弹出式菜单，其顶级菜单项的名称为a1，其“可见”属性为False。程序运行后，单击鼠标左键或右键都能弹出菜单的事件过程是A．Private Sub Form_MouseDown(Button As Integer，_ Shift As Integer，X As Single，Y As Single) If Button=1 And Button=2 Then PopupMenu a1 End If End SubB．Private Sub Form_MouseD

[单选题]假定已经在菜单编辑器中建立了窗体的弹出式菜单，其顶级菜单项的名称为a1，其“可见”属性为false，程序运行后，单击鼠标左键或右键都能弹出菜单的事件过

[单选题]假定已经在菜单编辑器中建立了窗体的弹出式菜单，其顶级菜单的名称为al，其“可见”属性为False。程序运行后，单击鼠标左键或右键都能弹出菜单的事件过程

[单选题]在菜单编辑器中建立1个名称为Menu0菜单项，将其“可见”属性设置为False，并建立其若干子菜单，然后编写如下过程： Private Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single，Y As Single) If Button=1 Then PopupMenu Menu0 End If End Sub 则以下叙述错误的是______。A．该过程的作用是弹出一个菜单B．单击鼠标右键时弹出菜单C．Menu0在菜单编