Contains information that is associated with an EN_CHANGE notification code. A windowless rich edit control sends this notification to its host window when the content of the control changes.
The type of change that occurred. It can be one of the following values.
No significant change occurred.
A new redo action was added.
A new undo action was added.
The text changed.
Cookie for the undo action that is associated with the change.
Minimum supported client
|Windows 8 [desktop apps only]|
Minimum supported server
|Windows Server 2012 [desktop apps only]|