通过

MediaPlaybackItem.AudioTracksChanged 事件

  • 参考

定义

命名空间:
Windows.Media.Playback
编辑

当与 MediaPlaybackItem 关联的 MediaSource 中的音频曲目列表更改时发生。

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

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

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

事件类型

TypedEventHandler<MediaPlaybackItem,IVectorChangedEventArgs>

适用于