MediaTransportControls.ThumbnailRequested 事件

定义

命名空间:

Windows.UI.Xaml.Controls

当用户执行查找操作时，每当应用需要显示与查找栏相邻的缩略图时发生。

// Register
event_token ThumbnailRequested(TypedEventHandler<MediaTransportControls, MediaTransportControlsThumbnailRequestedEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
MediaTransportControls::ThumbnailRequested_revoker ThumbnailRequested(auto_revoke_t, TypedEventHandler<MediaTransportControls, MediaTransportControlsThumbnailRequestedEventArgs const&> const& handler) const;

public event TypedEventHandler<MediaTransportControls,MediaTransportControlsThumbnailRequestedEventArgs> ThumbnailRequested;

function onThumbnailRequested(eventArgs) { /* Your code */ }
mediaTransportControls.addEventListener("thumbnailrequested", onThumbnailRequested);
mediaTransportControls.removeEventListener("thumbnailrequested", onThumbnailRequested);
- or -
mediaTransportControls.onthumbnailrequested = onThumbnailRequested;

Public Custom Event ThumbnailRequested As TypedEventHandler(Of MediaTransportControls, MediaTransportControlsThumbnailRequestedEventArgs) 

事件类型

TypedEventHandler<MediaTransportControls,MediaTransportControlsThumbnailRequestedEventArgs>

Windows 要求

设备系列	Windows 10 Anniversary Edition (在 10.0.14393.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v3.0 中引入)

注解

仅当 MediaTransportControls 与 MediaPlayerElement 一起使用时，才会引发此事件。 当 MediaTransportControls 与 MediaElement 一起使用时，不会引发它。