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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 

file: /Techref/os/win/api/win32/mess/src/msg04_11.htm, 1KB, , updated: 2000/4/7 11:19, local time: 2024/11/14 00:52,
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