# Function Reference

# _GUICtrlEdit_Undo

Undoes the last edit control operation in the control's undo queue

#include <GuiEdit.au3>
_GUICtrlEdit_Undo ( $hWnd )

## Parameters

$hWnd | Control ID/Handle to the control

## Return Value

Success: | True.
Failure: | False.

## Remarks

An undo operation can also be undone.
For example, you can restore deleted text with the first _GUICtrlEdit_Undo(), and remove the text again with a second _GUICtrlEdit_Undo() as long as there is no intervening edit operation.

## Related

_GUICtrlEdit_CanUndo, _GUICtrlEdit_EmptyUndoBuffer, _GUICtrlEdit_GetModify

## Example

    #include <GUIConstantsEx.au3>
    #include <GuiEdit.au3>
    #include <MsgBoxConstants.au3>

    Example()

    Func Example()
        Local $idEdit

        ; Create GUI
        GUICreate("Edit Undo", 400, 300)
        $idEdit = GUICtrlCreateEdit("This is a test" & @CRLF & "Another Line", 2, 2, 394, 268)
        GUISetState(@SW_SHOW)

        _GUICtrlEdit_AppendText($idEdit, @CRLF & "Append to the end?")

        ; Undo
        MsgBox($MB_SYSTEMMODAL, "Information", "Undo")
        _GUICtrlEdit_Undo($idEdit)

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