The installer uses the TimeRemaining event to publish the approximate time remaining, in seconds, for the current progress sequence. The time remaining can be displayed on a dialog box by a Text Control that subscribes to this ControlEvent. This event should be authored in the EventMapping table.
This ControlEvent is published by the installer.
The same text control that subscribes to the TimeRemaining ControlEvent can also subscribe to the ScriptInProgress ControlEvent. In this case, as the preliminary ScriptInProgress message string, it is replaced by the "Time Remaining: xx minutes" string.