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MediaPlaybackItem.VideoTracksChanged 事件

  • 參考

定義

命名空間:
Windows.Media.Playback
編輯

發生于與MediaPlaybackItem相關聯之 MediaSource中的視訊播放軌清單變更時。

// Register
event_token VideoTracksChanged(TypedEventHandler<MediaPlaybackItem, IVectorChangedEventArgs const&> const& handler) const;

// Revoke with event_token
void VideoTracksChanged(event_token const* cookie) const;

// Revoke with event_revoker
MediaPlaybackItem::VideoTracksChanged_revoker VideoTracksChanged(auto_revoke_t, TypedEventHandler<MediaPlaybackItem, IVectorChangedEventArgs const&> const& handler) const;
public event TypedEventHandler<MediaPlaybackItem,IVectorChangedEventArgs> VideoTracksChanged;
function onVideoTracksChanged(eventArgs) { /* Your code */ }
mediaPlaybackItem.addEventListener("videotrackschanged", onVideoTracksChanged);
mediaPlaybackItem.removeEventListener("videotrackschanged", onVideoTracksChanged);
- or -
mediaPlaybackItem.onvideotrackschanged = onVideoTracksChanged;
Public Custom Event VideoTracksChanged As TypedEventHandler(Of MediaPlaybackItem, IVectorChangedEventArgs)

事件類型

TypedEventHandler<MediaPlaybackItem,IVectorChangedEventArgs>

適用於