Sets or clears the modification flag for an edit control. The modification flag indicates whether the text within the edit control has been modified. You can send this message to either an edit control or a rich edit control.
The new value for the modification flag. A value of TRUE indicates the text has been modified, and a value of FALSE indicates it has not been modified.
This parameter is not used.
This message does not return a value.
The system automatically clears the modification flag to zero when the control is created. If the user changes the control's text, the system sets the flag to nonzero. You can send the EM_GETMODIFY message to the edit control to retrieve the current state of the flag.
Rich Edit 1.0: Objects created without the REO_DYNAMICSIZE flag will lock in their extents when the modify flag is set to FALSE.
Rich Edit: Supported in Microsoft Rich Edit 1.0 and later. For information about the compatibility of rich edit versions with the various system versions, see About Rich Edit Controls.
Minimum supported client
|Windows Vista [desktop apps only]|
Minimum supported server
|Windows Server 2003 [desktop apps only]|