Question

I am making an edit-control wrapper class. The edit-control around which the class wraps is sub-classed so that the virtual methods (or ‘events’, such as virtual void OnChange()) can be overridden. My only question is, if I handle, let’s say, the EN_CHANGE notification, in the controls subclass procedure, can the user still handle the EN_UPDATE notification in the parent windows procedure? Or does subclassing a control mean ALL of the notifications are handled by the controls new window procedure?

Answer 1

The messages that your subclass does not process should be given to CallWindowProc(original window procedure) so that the default for the control will happen instead.

That said, the EN_ notifications don’t get sent to the control, they get sent to the parent directly.