#613 – Window Event Sequence

The full sequence of events fired for a Window object are as follows.

On application startup, if the Window is the application’s main window.  (Application events are also shown in the correct sequence).

  • Application.Startup
  • Window.Initialized
  • Window.IsVisibleChanged
  • Window.SizeChanged
  • Window.LayoutUpdated
  • Window.SourceInitialized
  • Application.Activated
  • Window.Activated
  • Window.PreviewGotKeyboardFocus
  • Window.IsKeyboardFocusWithinChanged
  • Window.IsKeyboardFocusedChanged
  • Window.GotKeyboardFocus
  • Window.LayoutUpdated
  • Window.Loaded
  • Window.ContentRendered

On normal application shutdown, the event sequence is:

  • Window.Closing
  • Window.IsVisibleChanged
  • Window.Deactivated
  • Application.Deactivated
  • Window.IsKeyboardFocusWithinChanged
  • Window.IsKeyboardFocusedChanged
  • Window.LostKeyboardFocus
  • Window.Closed
  • Application.Exit

When application/window loses focus (user switches to another application):

  • Window.Deactivated
  • Application.Deactivated
  • Window.IsKeyboardFocusWithinChanged
  • Window.IsKeyboardFocusedChanged
  • Window.LostKeyboardFocus

When application/window gains focus (user switches back to application):

  • Application.Activated
  • Window.Activated
  • Window.PreviewGotKeyboardFocus
  • Window.IsKeyboardFocusWithinChanged
  • Window.IsKeyboardFocusChanged
  • Window.GotKeyboardFocus

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

4 Responses to #613 – Window Event Sequence

  1. Pingback: Dew Drop – July 30, 2012 (#1,374) | Alvin Ashcraft's Morning Dew

  2. Pingback: Application Event Sequence in WPF | Around computing

  3. Will says:

    Hmm, Window.Initialized is traditionally called in the classes constructor right? So are the succeeding actions called AFTER the constructor returns? Or during the Initialized method?

    • Will says:

      Ok never mind, I just just hooked up to all the events and the IsVisablityChanged fired after the constructor has returned. I think it’s more difficult to identify what content you should be placing is the correct event. Such as getting a hwnd reference would go in the Window.SourceInitialized event

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