GUIBaseContext :: doAfterInsertData - Post-event handler after inserting new instance

The handler is called after inserting a new instance (line) in a tree or list (DEV_Inserted event). The handler allows e.g. modifying the data for the instance created. The property handle for the newly created instance can be provided by calling currentProperty().

The handler should return one of the following return codes:

• -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.