DesktopWindowXamlSource.TakeFocusRequested 事件

定義

命名空間:

Microsoft.UI.Xaml.Hosting

當主機桌面應用程式收到來自 DesktopWindowXamlSource 物件的請求「回焦點」時（例如，使用者在 DesktopWindowXamlSource 中最後一個可聚焦元素並按下 Tab 鍵）。

// Register
event_token TakeFocusRequested(TypedEventHandler<DesktopWindowXamlSource, DesktopWindowXamlSourceTakeFocusRequestedEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
DesktopWindowXamlSource::TakeFocusRequested_revoker TakeFocusRequested(auto_revoke_t, TypedEventHandler<DesktopWindowXamlSource, DesktopWindowXamlSourceTakeFocusRequestedEventArgs const&> const& handler) const;

public event TypedEventHandler<DesktopWindowXamlSource,DesktopWindowXamlSourceTakeFocusRequestedEventArgs> TakeFocusRequested;

function onTakeFocusRequested(eventArgs) { /* Your code */ }
desktopWindowXamlSource.addEventListener("takefocusrequested", onTakeFocusRequested);
desktopWindowXamlSource.removeEventListener("takefocusrequested", onTakeFocusRequested);
- or -
desktopWindowXamlSource.ontakefocusrequested = onTakeFocusRequested;

Public Custom Event TakeFocusRequested As TypedEventHandler(Of DesktopWindowXamlSource, DesktopWindowXamlSourceTakeFocusRequestedEventArgs) 

事件類型

TypedEventHandler<DesktopWindowXamlSource,DesktopWindowXamlSourceTakeFocusRequestedEventArgs>

備註

當你在桌面應用程式中新增 DesktopWindowXamlSource 時，預設情況下 DesktopWindowXamlSource 不會自動透過鍵盤事件（如 Tab 鍵或方向鍵）來處理焦點導航。 處理此事件，當使用者從 DesktopWindowXamlSource 移動時，程式化地將焦點置於主機應用程式中下一個可聚焦元素。