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EM_CANUNDO Overview  Group

An application sends an EM_CANUNDO message to determine whether an edit-control operation can be undone; that is, whether the control can respond to the EM_UNDO message. 

EM_CANUNDO 

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

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

 

Parameters

This message has no parameters.

Return Values

If the edit control can correctly process the EM_UNDO message, the return value is TRUE; otherwise, it is FALSE.

See Also

EM_UNDO 

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