AudioTrack.OpenFailed 事件

定義

命名空間:

Windows.Media.Core

當 AudioTrack 無法開啟時發生。

// Register
event_token OpenFailed(TypedEventHandler<AudioTrack, AudioTrackOpenFailedEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
AudioTrack::OpenFailed_revoker OpenFailed(auto_revoke_t, TypedEventHandler<AudioTrack, AudioTrackOpenFailedEventArgs const&> const& handler) const;

public event TypedEventHandler<AudioTrack,AudioTrackOpenFailedEventArgs> OpenFailed;

function onOpenFailed(eventArgs) { /* Your code */ }
audioTrack.addEventListener("openfailed", onOpenFailed);
audioTrack.removeEventListener("openfailed", onOpenFailed);
- or -
audioTrack.onopenfailed = onOpenFailed;

Public Custom Event OpenFailed As TypedEventHandler(Of AudioTrack, AudioTrackOpenFailedEventArgs) 

事件類型

TypedEventHandler<AudioTrack,AudioTrackOpenFailedEventArgs>

Windows 需求

裝置系列	Windows 10 Anniversary Edition (已於 10.0.14393.0 引進)
API contract	Windows.Foundation.UniversalApiContract (已於 v3.0 引進)

備註

從MediaPlaybackItem的AudioTracksChanged事件處理常式內註冊AudioTrack的OpenFailed事件，每當音訊播放軌新增至專案時，就會引發此事件。