Interactive GeneXus objects (those with UI that allow end users to interact with the application) such as Transaction, Web Panel, and Panel objects are event-driven.
This means that this kind of objects contain an Events Tab to define the desired behavior inside:
- System events (they are automatically triggered)
- User events (you can define your own events associated with controls)
Depending on which object is concerned, different System events will be available (a combo box lets you select each System event to include inside it the code you want to execute when the event is triggered).
GeneXus objects