winform.edit.height=50 ::PostMessage(winfom.combobox.hwnd,0x153/*_CB_SETEHEIGHT*/,-1,winfom.edit.height-6) ::PostMessage(winfom.combobox.hwnd,0x153/*_CB_SETEHEIGHT*/,0,winfom.edit.height-6)
摘自光庆提供的方法