The Flex manager classes handle various tasks of the Flex application. For example, the DragManager handles all the
drag-and-drop functionality; this manager class is responsible for marshaling data, creating the DragProxy, and
triggering drag-related events.
When sub-applications are loaded into the same application domain as the main application, the application domain
contains only a single instance of each manager. When applications are in different application domains, though, there
can be more than one instance of a manager in the system domain.
Depending on the type of task, the manager classes ...
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