PlayToSourceRequest 類別

定義

命名空間:

Windows.Media.PlayTo

表示使用 Play To 目標連接媒體元素的要求。

public ref class PlayToSourceRequest sealed

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Deprecated("PlayToSourceRequest may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
class PlayToSourceRequest final

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Deprecated("PlayToSourceRequest may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class PlayToSourceRequest

Public NotInheritable Class PlayToSourceRequest

繼承

Object Platform::Object IInspectable PlayToSourceRequest

屬性

ContractVersionAttribute DeprecatedAttribute MarshalingBehaviorAttribute

Windows 需求

裝置系列	Windows 10 (已於 10.0.10240.0 引進)
API contract	Windows.Foundation.UniversalApiContract (已於 v1.0 引進)

範例

// Play To Contract

private Windows.Media.PlayTo.PlayToManager ptm = 
        Windows.Media.PlayTo.PlayToManager.GetForCurrentView();

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    ptm.SourceRequested += sourceRequestHandler;
}

private void sourceRequestHandler(
    Windows.Media.PlayTo.PlayToManager sender,
    Windows.Media.PlayTo.PlayToSourceRequestedEventArgs e)
{
    try
    {
        e.SourceRequest.SetSource(mediaElement.PlayToSource);
    }
    catch (Exception ex)
    {
        messageBlock.Text += "Exception encountered: " + ex.Message + "\n";
    }
}

' Play To Contract

Private ptm As Windows.Media.PlayTo.PlayToManager =
        Windows.Media.PlayTo.PlayToManager.GetForCurrentView()

Protected Overrides Sub OnNavigatedTo(e As Navigation.NavigationEventArgs)
    AddHandler ptm.SourceRequested, AddressOf sourceRequestHandler
End Sub

Private Sub sourceRequestHandler(
    sender As Windows.Media.PlayTo.PlayToManager,
    e As Windows.Media.PlayTo.PlayToSourceRequestedEventArgs)

    Try
        e.SourceRequest.SetSource(mediaElement.PlayToSource)
    Catch ex As Exception
        messageBlock.Text &= "Exception encountered: " & ex.Message & vbCrLf
    End Try
End Sub

備註

PlayToSourceRequest 類別代表將來源媒體串流至播放目標的使用者要求。 您可以使用 PlayToSourceRequestedEventArgs 類別的 SourceRequest 屬性，在 SourceRequested 事件期間將媒體從您的應用程式傳遞至 Play To。

當您想要進行異步呼叫以擷取要串流的媒體元素時，您可以使用 GetDeferral 方法來建立延遲。 [播放到] 會等到您提供媒體元素，直到您將延遲標示為完成為止。

如需如何在應用程式中使用 Play To 的範例，請參閱 PlayReady DRM。

屬性

Deadline

取得提供播放至來源元素的時間限制。

方法

DisplayErrorString(String)	在播放至 UI 中顯示錯誤訊息。
GetDeferral()	延遲將媒體來源連線至播放目標。
SetSource(PlayToSource)	設定要連線到播放至目標的來源元素。

另請參閱

• 播放至範例
• PlayToReceiver 範例
• 媒體伺服器範例