MediaPlaybackItem.AudioTracksChanged 事件
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
發生于與MediaPlaybackItem相關聯之 MediaSource中的音訊播放軌清單變更時。
// 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)