Camerabuttons 事件只是没有在 WP7.1 应用程序中触发 [英] Camerabuttons events just not firing in WP7.1 app

问题描述

我已认真遵循 http://msdn.microsoft.com/en-us/library/microsoft.devices.camerabuttons.shutterkeyhalfpressed(v=vs.92).aspx 尝试在我的WP7.1 Silverlight 应用程序.在我的主要形式中，我有:

I've diligently followed the instructions at http://msdn.microsoft.com/en-us/library/microsoft.devices.camerabuttons.shutterkeyhalfpressed(v=vs.92).aspx to try and hook the camera events in my WP7.1 Silverlight app. In my main form I have:

   protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
    {
        CameraButtons.ShutterKeyPressed += new EventHandler(CameraButtons_ShutterKeyPressed);
    }

然后……

   void CameraButtons_ShutterKeyPressed(object sender, EventArgs e)
    {
        // stuff
    }

然而，这个事件永远不会触发.当我按下相机按钮时，手机会跳到相机模式.我错过了什么吗?我从上面的文章中了解到，我可能需要将以下内容添加到我的 WPAppManifest.xml 中，因为该项目是从 WP7.0 转换而来的:

However, this event never fires. When I press the camera button, the phone just jumps to camera mode. Am I missing something? I got the sense from the above article that I might need to add the following to my WPAppManifest.xml, because the project was converted from WP7.0:

  <Capability Name="ID_CAP_ISV_CAMERA" />

...但我这样做了，并没有太大变化.有什么想法吗?

... but I did that, and nothing much changed. Any ideas?

推荐答案

如果捕获尚未开始 (CaptureSource.Start)，则不会触发此事件.

If the capture has not started (CaptureSource.Start), this event will not fire.

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