Edit

EN_STOPNOUNDO notification code

  • Article

Notifies a rich edit control's parent window that an action occurred for which the control cannot allocate enough memory to maintain the undo state. A rich edit control sends this notification code in the form of a WM_NOTIFY message.

EN_STOPNOUNDO

    lpnmhdr = (LPNMHDR) lParam;

Parameters

lParam

An NMHDR structure.

Return value

Return zero to continue the Undo operation.

Return a nonzero value to stop the Undo operation.

Remarks

The parent window will always get a WM_NOTIFY message for this event, it does not require a notification mask sent with EM_SETEVENTMASK.

Requirements

Requirement Value
Minimum supported client
 Windows Vista [desktop apps only]
Minimum supported server
 Windows Server 2003 [desktop apps only]
Header
Richedit.h

See also

Reference

NMHDR

WM_NOTIFY