GUIBaseContext :: doAfterStoreData - Post-event handler after storing control data

The handler is a reaction on the DEV_Stored event, which is generated when instance in a control is stored to property handle or when explicitly calling the StoreEntry action.. When the event is fired, changes have already been stored to the property handle instance area.

The handler should return one of the following values:

• -1 (not handled) - the event handler will be removed from the handler list and is not called anymore.
• 1 (error) - Returning an error has no effect for post-events.
• 0 (ok) - Event handler terminated successfully.