This article describes how Mashup Center system widgets communicate through public events.
The mashup builder itself is an example of a mashup application. The user interface is coded with a set of system widgets that communicate with each other through wires that allow the sending and receiving of events. These system widgets are wired together to create the environment you use when you create your own mashup.
As a developer, you can use system widgets and their events as a reference when creating your own system widgets. As you develop widgets, you can refer back to this reference content to understand how to work with the events that are defined in each system widget.
To see the most updated list of system widgets and events, see Understanding how system widgets interact through events
in the Mashup Center community wiki.
Parent topic: Widget programming and API documentation