Edit_CanUndo macro (windowsx.h)

Determines whether there are any actions in the undo queue of an edit or rich edit control. You can use this macro or send the EM_CANUNDO message explicitly.

Syntax

BOOL Edit_CanUndo(
   HWND hwndCtl
);

Parameters

hwndCtl

Type: HWND

A handle to the control.

Return value

Type: BOOL

TRUE if there are actions in the undo queue; otherwise FALSE.

Remarks

For more information, see EM_CANUNDO.

Requirements