| AboutEvent | 
 Event sent when the application is asked to open its about window. 
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| AppEvent | 
AppEvents are sent to listeners and handlers installed on the
  Desktop instance of the current desktop context.  
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| AppForegroundEvent | 
 Event sent when the application has become the foreground app, and when it is
 no longer the foreground app. 
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| AppHiddenEvent | 
 Event sent when the application has been hidden or shown. 
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| AppReopenedEvent | 
 Event sent when the application is asked to re-open itself. 
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| FilesEvent | 
 Auxiliary event containing a list of files. 
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| OpenFilesEvent | 
 Event sent when the app is asked to open a list of files. 
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| OpenURIEvent | 
 Event sent when the app is asked to open a URI. 
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| PreferencesEvent | 
 Event sent when the application is asked to open its preferences window. 
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| PrintFilesEvent | 
 Event sent when the app is asked to print a list of files. 
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| QuitEvent | 
 Event sent when the application is asked to quit. 
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| QuitResponse | 
 Used to respond to a request to quit the application. 
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| QuitStrategy | 
 The strategy used to shut down the application, if Sudden Termination is not enabled. 
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| ScreenSleepEvent | 
 Event sent when the displays attached to the system enter and exit power save
 sleep. 
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| SystemEventListener | 
 Common interface for all event listener sub-types. 
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| SystemSleepEvent | 
 Event sent when the system enters and exits power save sleep. 
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| UserSessionEvent | 
 Event sent when the user session has been changed. 
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| UserSessionEvent.Reason | 
 Kinds of available reasons of user session change. 
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