AdaptiveMediaSource.DownloadRequested 事件
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
请求资源下载操作时发生。
// Register
event_token DownloadRequested(TypedEventHandler<AdaptiveMediaSource, AdaptiveMediaSourceDownloadRequestedEventArgs const&> const& handler) const;
// Revoke with event_token
void DownloadRequested(event_token const* cookie) const;
// Revoke with event_revoker
AdaptiveMediaSource::DownloadRequested_revoker DownloadRequested(auto_revoke_t, TypedEventHandler<AdaptiveMediaSource, AdaptiveMediaSourceDownloadRequestedEventArgs const&> const& handler) const;
public event TypedEventHandler<AdaptiveMediaSource,AdaptiveMediaSourceDownloadRequestedEventArgs> DownloadRequested;
function onDownloadRequested(eventArgs) { /* Your code */ }
adaptiveMediaSource.addEventListener("downloadrequested", onDownloadRequested);
adaptiveMediaSource.removeEventListener("downloadrequested", onDownloadRequested);
- or -
adaptiveMediaSource.ondownloadrequested = onDownloadRequested;
Public Custom Event DownloadRequested As TypedEventHandler(Of AdaptiveMediaSource, AdaptiveMediaSourceDownloadRequestedEventArgs)
事件类型
注解
处理此事件以在操作开始之前修改资源下载操作的参数。