SetProgress ControlEvent
The installer uses the SetProgress event to publish information on the installation's progress. A ProgressBar Control or Billboard Control should subscribe to the event via the EventMapping table by naming the Action whose progress is being indicated. This event should be authored in the EventMapping table.
This ControlEvent can be handled by a user interface run at the basic UI, reduced UI, or full UI levels. For information about UI levels, see User Interface Levels.
This ControlEvent is published by the installer.
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A ProgressBar control on a modeless dialog box subscribes to this event using the Progress attribute to receive the progress information.