winjs.orientationChange

(function () {

2.    "use strict";

3.

4.    WinJS.Binding.optimizeBindingReferences = true;

5.

6.    var app = WinJS.Application;

7.    var activation = Windows.ApplicationModel.Activation;

8.

9.    app.onactivated = function (args) {

10.        if (args.detail.kind === activation.ActivationKind.launch) {

11.            if (args.detail.previousExecutionState !== activation.ApplicationExecutionState.terminated) {

12.            } else {

13.            }

14.            args.setPromise(WinJS.UI.processAll());

15.        }

16.    };

17.

18.    app.onready = function () {

19.        var message = document.getElementById('message');

20.        var display = Windows.Graphics.Display.DisplayProperties;

21.        display.addEventListener('orientationchanged', onOrientationchanged);

22.

23.        onOrientationchanged();

24.    }

25.

26.    function onOrientationchanged() {

27.        switch (Windows.Graphics.Display.DisplayProperties.currentOrientation) {

28.

29.            case Windows.Graphics.Display.DisplayOrientations.landscape:

30.                message.innerText = "Display Orientation - Landscape";

31.                break;

32.

33.            case Windows.Graphics.Display.DisplayOrientations.portrait:

34.                message.innerText = "Display Orientation - Portrait";

35.                break;

36.

37.            case Windows.Graphics.Display.DisplayOrientations.landscapeFlipped:

38.                message.innerText = "Display Orientation - Landscape (flipped)";

39.                break;

40.

41.            case Windows.Graphics.Display.DisplayOrientations.portraitFlipped:

42.                message.innerText = "Display Orientation - Portrait (flipped)";

43.                break;

44.

45.            default:

46.                message.innerText = "Unknown";

47.                break;

48.        }

49.

50.    }

51.

52.    app.oncheckpoint = function (args) {

53.    };

54.

55.    app.start();

56.})();