#include <GUIConstantsEx.au3>

Opt('MustDeclareVars', 1)

Example()

Func Example()
    Local $msg
    GUICreate("My GUI combo")  ; will create a dialog box that when displayed is centered

    GUICtrlCreateCombo("item1", 10, 10) ; create first item
    GUICtrlSetData(-1, "item2|item3", "item3") ; add other item snd set a new default

    GUISetState()

    ; Run the GUI until the dialog is closed
    While 1
        $msg = GUIGetMsg()
        
        If $msg = $GUI_EVENT_CLOSE Then ExitLoop
    WEnd
EndFunc   ;==>Example