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