Question

VB的combobox问题，怎样点击按钮控件弹出下拉菜单

combobox控件，当我们点击那个小箭头时会弹出其下拉菜单。但我想点击按钮Command1就弹出combobox的下拉菜单，应该怎样做？

Answer 1

你可以在command的单击事件中改变combox的style属性，呵呵

Answer 2

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const CB_SHOWDROPDOWN = &H14F

Private Sub Command1_Click()
SendMessage Combo1.hwnd, CB_SHOWDROPDOWN, True, 0&
End Sub