PlayToReceiver 构造函数

定义

命名空间:

Windows.Media.PlayTo

创建“播放到”接收器的新实例。

public:
 PlayToReceiver();

 PlayToReceiver();

public PlayToReceiver();

function PlayToReceiver()

Public Sub New ()

Windows 要求

应用功能	privateNetworkClientServer

注解

有关创建软件“播放到”接收器的示例，请参阅 媒体转换。

Windows.Media.PlayTo.PlayToReceiver receiver;
Windows.System.Display.DisplayRequest display;
Windows.UI.Core.CoreDispatcher dispatcher;
bool seeking = false;

private async void StartReceiverButton_Click(object sender, RoutedEventArgs e)
{
    try
    {
        dispatcher = Window.Current.CoreWindow.Dispatcher;

        if (receiver == null)
        {
            receiver = new Windows.Media.PlayTo.PlayToReceiver();
        }

        // Add Play To Receiver events and properties
        receiver.CurrentTimeChangeRequested += receiver_CurrentTimeChangeRequested;
        receiver.MuteChangeRequested += receiver_MuteChangeRequested;
        receiver.PauseRequested += receiver_PauseRequested;
        receiver.PlaybackRateChangeRequested += receiver_PlaybackRateChangeRequested;
        receiver.PlayRequested += receiver_PlayRequested;
        receiver.SourceChangeRequested += receiver_SourceChangeRequested;
        receiver.StopRequested += receiver_StopRequested;
        receiver.TimeUpdateRequested += receiver_TimeUpdateRequested;
        receiver.VolumeChangeRequested += receiver_VolumeChangeRequested;

        receiver.FriendlyName = "Sample Play To Receiver";
        receiver.SupportsAudio = false;
        receiver.SupportsVideo = true;
        receiver.SupportsImage = false;

        // Add MediaElement events
        VideoPlayer.CurrentStateChanged += VideoPlayer_CurrentStateChanged;
        VideoPlayer.MediaEnded += VideoPlayer_MediaEnded;
        VideoPlayer.MediaFailed += VideoPlayer_MediaFailed;
        VideoPlayer.MediaOpened += VideoPlayer_MediaOpened;
        VideoPlayer.RateChanged += VideoPlayer_RateChanged;
        VideoPlayer.SeekCompleted += VideoPlayer_SeekCompleted;
        VideoPlayer.VolumeChanged += VideoPlayer_VolumeChanged;

        // Advertise the receiver on the local network and start receiving commands
        await receiver.StartAsync();

        // Prevent the screen from locking
        if (display == null)
            display = new Windows.System.Display.DisplayRequest();
        display.RequestActive();

        StatusTextBlock.Text = "'" + receiver.FriendlyName + "' started.";
    }
    catch
    {
        receiver = null;
        StatusTextBlock.Text = "Failed to start receiver.";
    }
}

private async void StopReceiverButton_Click(object sender, RoutedEventArgs e)
{
    try
    {
        if (receiver != null)
        {
            await receiver.StopAsync();

            if (display != null)
                display.RequestRelease();

            // Remove Play To Receiver events
            receiver.CurrentTimeChangeRequested -= receiver_CurrentTimeChangeRequested;
            receiver.MuteChangeRequested -= receiver_MuteChangeRequested;
            receiver.PauseRequested -= receiver_PauseRequested;
            receiver.PlaybackRateChangeRequested -= receiver_PlaybackRateChangeRequested;
            receiver.PlayRequested -= receiver_PlayRequested;
            receiver.SourceChangeRequested -= receiver_SourceChangeRequested;
            receiver.StopRequested -= receiver_StopRequested;
            receiver.TimeUpdateRequested -= receiver_TimeUpdateRequested;
            receiver.VolumeChangeRequested -= receiver_VolumeChangeRequested;

            //  Remove MediaElement events
            VideoPlayer.Pause();

            VideoPlayer.CurrentStateChanged -= VideoPlayer_CurrentStateChanged;
            VideoPlayer.MediaEnded -= VideoPlayer_MediaEnded;
            VideoPlayer.MediaFailed -= VideoPlayer_MediaFailed;
            VideoPlayer.MediaOpened -= VideoPlayer_MediaOpened;
            VideoPlayer.RateChanged -= VideoPlayer_RateChanged;
            VideoPlayer.SeekCompleted -= VideoPlayer_SeekCompleted;
            VideoPlayer.VolumeChanged -= VideoPlayer_VolumeChanged;

            StatusTextBlock.Text = "Stopped '" + receiver.FriendlyName + "'.";
        }
    }
    catch
    {
        StatusTextBlock.Text = "Failed to stop '" + receiver.FriendlyName + "'.";
    }
}

Private receiver As Windows.Media.PlayTo.PlayToReceiver
Private display As Windows.System.Display.DisplayRequest
Private seeking As Boolean = False

Private Async Sub StartReceiverButton_Click()
    Try
        If receiver Is Nothing Then
            receiver = New Windows.Media.PlayTo.PlayToReceiver()
        End If

        ' Add Play To Receiver events and properties
        AddHandler receiver.CurrentTimeChangeRequested, AddressOf receiver_CurrentTimeChangeRequested
        AddHandler receiver.MuteChangeRequested, AddressOf receiver_MuteChangeRequested
        AddHandler receiver.PauseRequested, AddressOf receiver_PauseRequested
        AddHandler receiver.PlaybackRateChangeRequested, AddressOf receiver_PlaybackRateChangeRequested
        AddHandler receiver.PlayRequested, AddressOf receiver_PlayRequested
        AddHandler receiver.SourceChangeRequested, AddressOf receiver_SourceChangeRequested
        AddHandler receiver.StopRequested, AddressOf receiver_StopRequested
        AddHandler receiver.TimeUpdateRequested, AddressOf receiver_TimeUpdateRequested
        AddHandler receiver.VolumeChangeRequested, AddressOf receiver_VolumeChangeRequested

        receiver.FriendlyName = "Sample Play To Receiver"
        receiver.SupportsAudio = False
        receiver.SupportsVideo = True
        receiver.SupportsImage = False

        ' Add MediaElement events
        AddHandler VideoPlayer.CurrentStateChanged, AddressOf VideoPlayer_CurrentStateChanged
        AddHandler VideoPlayer.MediaEnded, AddressOf VideoPlayer_MediaEnded
        AddHandler VideoPlayer.MediaFailed, AddressOf VideoPlayer_MediaFailed
        AddHandler VideoPlayer.MediaOpened, AddressOf VideoPlayer_MediaOpened
        AddHandler VideoPlayer.RateChanged, AddressOf VideoPlayer_RateChanged
        AddHandler VideoPlayer.SeekCompleted, AddressOf VideoPlayer_SeekCompleted
        AddHandler VideoPlayer.VolumeChanged, AddressOf VideoPlayer_VolumeChanged

        ' Advertise the receiver on the local network and start receiving commands
        Await receiver.StartAsync()

        ' Prevent the screen from locking
        If display Is Nothing Then
            display = New Windows.System.Display.DisplayRequest()
            display.RequestActive()

            StatusTextBlock.Text = "'" & receiver.FriendlyName & "' started."
        End If
    Catch
        receiver = Nothing
        StatusTextBlock.Text = "Failed to start receiver. "
    End Try
End Sub

Private Async Sub StopReceiverButton_Click()
    Try
        If receiver IsNot Nothing Then
            Await receiver.StopAsync()

            If display IsNot Nothing Then display.RequestRelease()

            ' Remove Play To Receiver events
            RemoveHandler receiver.CurrentTimeChangeRequested, AddressOf receiver_CurrentTimeChangeRequested
            RemoveHandler receiver.MuteChangeRequested, AddressOf receiver_MuteChangeRequested
            RemoveHandler receiver.PauseRequested, AddressOf receiver_PauseRequested
            RemoveHandler receiver.PlaybackRateChangeRequested, AddressOf receiver_PlaybackRateChangeRequested
            RemoveHandler receiver.PlayRequested, AddressOf receiver_PlayRequested
            RemoveHandler receiver.SourceChangeRequested, AddressOf receiver_SourceChangeRequested
            RemoveHandler receiver.StopRequested, AddressOf receiver_StopRequested
            RemoveHandler receiver.TimeUpdateRequested, AddressOf receiver_TimeUpdateRequested
            RemoveHandler receiver.VolumeChangeRequested, AddressOf receiver_VolumeChangeRequested

            '  Remove MediaElement events
            VideoPlayer.Pause()

            RemoveHandler VideoPlayer.CurrentStateChanged, AddressOf VideoPlayer_CurrentStateChanged
            RemoveHandler VideoPlayer.MediaEnded, AddressOf VideoPlayer_MediaEnded
            RemoveHandler VideoPlayer.MediaFailed, AddressOf VideoPlayer_MediaFailed
            RemoveHandler VideoPlayer.MediaOpened, AddressOf VideoPlayer_MediaOpened
            RemoveHandler VideoPlayer.RateChanged, AddressOf VideoPlayer_RateChanged
            RemoveHandler VideoPlayer.SeekCompleted, AddressOf VideoPlayer_SeekCompleted
            RemoveHandler VideoPlayer.VolumeChanged, AddressOf VideoPlayer_VolumeChanged

            StatusTextBlock.Text = "Stopped '" & receiver.FriendlyName & "'."
        End If
    Catch
        StatusTextBlock.Text = "Failed to stop '" & receiver.FriendlyName & "'."
    End Try
End Sub

另请参阅

• 播放到示例
• PlayToReceiver 示例
• 媒体服务器示例