An application sends an EM_SETMODIFY message to set or clear the modification flag for an edit control. The modification flag indicates whether or not the text within the edit control has been modified. It is automatically set whenever the user changes the text. Its value may be retrieved by sending an EM_GETMODIFY message.
wParam
Specifies the new value for the modify flag. A value of TRUE indicates the text has been modified, and a value of FALSE indicates it is unmodified.
lParam
This parameter is not used.
This message always returns TRUE.
EM_GETMODIFY