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EN_STOPNOUNDO notification code

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.

C++


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

Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Richedit.h

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