EM_EMPTYUNDOBUFFER Overview  Group

An application sends an EM_EMPTYUNDOBUFFER message to reset the undo flag of an edit control. The undo flag is set whenever an operation within the edit control can be undone.

EM_EMPTYUNDOBUFFER 

wParam = 0; // not used; must be zero 

lParam = 0; // not used; must be zero 

 

Parameters

This message has no parameters.

Return Values

This message does not return a value.

Remarks

The undo flag is automatically reset whenever the edit control receives a WM_SETTEXT or EM_SETHANDLE message.

See Also

EM_CANUNDO, EM_SETHANDLE, EM_UNDO, WM_SETTEXT