PlayToManager.SourceRequested 事件
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
当用户请求媒体流式传输到“播放到”目标设备时发生。
/// [add: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, Windows.Foundation.UniversalApiContract)]
/// [remove: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, Windows.Foundation.UniversalApiContract)]
// Register
event_token SourceRequested(TypedEventHandler<PlayToManager, PlayToSourceRequestedEventArgs const&> const& handler) const;
// Revoke with event_token
void SourceRequested(event_token const* cookie) const;
// Revoke with event_revoker
PlayToManager::SourceRequested_revoker SourceRequested(auto_revoke_t, TypedEventHandler<PlayToManager, PlayToSourceRequestedEventArgs const&> const& handler) const;/// [add: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
/// [remove: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
// Register
event_token SourceRequested(TypedEventHandler<PlayToManager, PlayToSourceRequestedEventArgs const&> const& handler) const;
// Revoke with event_token
void SourceRequested(event_token const* cookie) const;
// Revoke with event_revoker
PlayToManager::SourceRequested_revoker SourceRequested(auto_revoke_t, TypedEventHandler<PlayToManager, PlayToSourceRequestedEventArgs const&> const& handler) const;[add: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, typeof(Windows.Foundation.UniversalApiContract))]
[remove: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, typeof(Windows.Foundation.UniversalApiContract))]
public event TypedEventHandler<PlayToManager,PlayToSourceRequestedEventArgs> SourceRequested;[add: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
[remove: Windows.Foundation.Metadata.Deprecated("PlayToManager may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
public event TypedEventHandler<PlayToManager,PlayToSourceRequestedEventArgs> SourceRequested;function onSourceRequested(eventArgs) { /* Your code */ }
playToManager.addEventListener("sourcerequested", onSourceRequested);
playToManager.removeEventListener("sourcerequested", onSourceRequested);
- or -
playToManager.onsourcerequested = onSourceRequested;Public Custom Event SourceRequested As TypedEventHandler(Of PlayToManager, PlayToSourceRequestedEventArgs) 事件类型
- 属性
注解
当用户在启用了“播放到–”的应用程序中选择“设备”超级按钮时，将触发 SourceRequested 事件。 提供音频、视频或图像，播放到将在 SourceRequested 事件期间流式传输到目标设备。
如果在 200 毫秒内未提供媒体源， SourceRequested 事件将超时，并且“设备”超级按钮不会显示应用的任何“播放到”目标。
在用户选择目标设备之前发生 SourceRequested 事件。 用户选择目标设备后，将触发 SourceSelected 事件。 如果用户在未选择目标设备的情况下退出“ 设备 ”超级按钮，则不会触发 SourceSelected 事件。