# Function Reference

# _GUICtrlComboBox_AutoComplete

AutoComplete a ComboBox edit control

#include <GuiComboBox.au3>
_GUICtrlComboBox_AutoComplete ( $hWnd )

## Parameters

$hWnd | Control ID/Handle to the control

## Return Value

None.

## Example

    #include "Extras\WM_NOTIFY.au3"

    #include <GuiComboBox.au3>
    #include <GUIConstantsEx.au3>
    #include <WindowsNotifsConstants.au3>

    Global $g_idCombo

    Example()

    Func Example()
        ; Create GUI
        GUICreate("ComboBox Auto Complete (v" & @AutoItVersion & ")", 400, 296)
        $g_idCombo = GUICtrlCreateCombo("", 2, 2, 396, 296)
        GUISetState(@SW_SHOW)

        ; Add files
        _GUICtrlComboBox_BeginUpdate($g_idCombo)
        _GUICtrlComboBox_AddDir($g_idCombo, @WindowsDir & "\*.exe")
        _GUICtrlComboBox_EndUpdate($g_idCombo)

        GUIRegisterMsg($WM_COMMAND, "WM_COMMAND")

        ; Loop until the user exits.
        Do
        Until GUIGetMsg() = $GUI_EVENT_CLOSE
        GUIDelete()
    EndFunc   ;==>Example

    Func _Edit_Changed()
        _GUICtrlComboBox_AutoComplete($g_idCombo)
    EndFunc   ;==>_Edit_Changed

    Func WM_COMMAND($hWnd, $iMsg, $wParam, $lParam)
        #forceref $hWnd, $iMsg
        Local $hWndCombo = $g_idCombo
        If Not IsHWnd($g_idCombo) Then $hWndCombo = GUICtrlGetHandle($g_idCombo)
        Local $hWndFrom = $lParam
        Local $iIDFrom = BitAND($wParam, 0xFFFF) ; Low Word
        Local $iCode = BitShift($wParam, 16) ; Hi Word
        Switch $hWndFrom
            Case $g_idCombo, $hWndCombo
                Switch $iCode
                    Case $CBN_CLOSEUP ; Sent when the list box of a combo box has been closed
                        _WM_NOTIFY_DebugInfo("$CBN_CLOSEUP", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_DBLCLK ; Sent when the user double-clicks a string in the list box of a combo box
                        _WM_NOTIFY_DebugInfo("$CBN_DBLCLK", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_DROPDOWN ; Sent when the list box of a combo box is about to be made visible
                        _WM_NOTIFY_DebugInfo("$CBN_DROPDOWN", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_EDITCHANGE ; Sent after the user has taken an action that may have altered the text in the edit control portion of a combo box
                        _WM_NOTIFY_DebugInfo("$CBN_EDITCHANGE", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        _Edit_Changed()
                        ; no return value
                    Case $CBN_EDITUPDATE ; Sent when the edit control portion of a combo box is about to display altered text
                        _WM_NOTIFY_DebugInfo("$CBN_EDITUPDATE", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_ERRSPACE ; Sent when a combo box cannot allocate enough memory to meet a specific request
                        _WM_NOTIFY_DebugInfo("$CBN_ERRSPACE", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_KILLFOCUS ; Sent when a combo box loses the keyboard focus
                        _WM_NOTIFY_DebugInfo("$CBN_KILLFOCUS", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_SELCHANGE ; Sent when the user changes the current selection in the list box of a combo box
                        _WM_NOTIFY_DebugInfo("$CBN_SELCHANGE", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_SELENDCANCEL ; Sent when the user selects an item, but then selects another control or closes the dialog box
                        _WM_NOTIFY_DebugInfo("$CBN_SELENDCANCEL", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_SELENDOK ; Sent when the user selects a list item, or selects an item and then closes the list
                        _WM_NOTIFY_DebugInfo("$CBN_SELENDOK", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                    Case $CBN_SETFOCUS ; Sent when a combo box receives the keyboard focus
                        _WM_NOTIFY_DebugInfo("$CBN_SETFOCUS", "hWndFrom,IDFrom", $hWndFrom, $iIDFrom)
                        ; no return value
                EndSwitch
        EndSwitch
        Return $GUI_RUNDEFMSG
    EndFunc   ;==>WM_COMMAND