如何触发隐藏控件事件

Question

两个comobox控件  ,combo1和combo2重叠放置 combo1在上,combo2在下
现在鼠标点击combo1右边下拉按钮 触发DropDown事件  
问题:
  当combo1 DropDown事件触发时 Combo1.Visible=False,然后combo2的dropdown事件被触发,
  combo2的下拉列表要打开

Answer 1

combo2.setfocus
sendkeys "{F4}"试试管不管，我没试

Answer 2

Private Sub Combo2_DropDown()
 Combo1_DropDown
End Sub

Answer 3

Private Sub Combo1_DropDown()
 Combo1.Visible=False
 SendMessage(Combo2.hWnd, CB_SHOWDROPDOWN, true, ByVal 0&)
End Sub