InputFocusController.NavigateFocusRequested 事件

定义

命名空间:

Microsoft.UI.Input

当 Content.ContentIsland 主机希望 ContentIsland 获取焦点时发生。

例如，用户已按 Tab 键浏览主机的元素，现在需要按 Tab 键进入 ContentIsland。 宿主应用程序在与 SiteBridge 关联的 InputFocusNavigationHost 上调用 InputFocusNavigationHost.NavigateFocus (Microsoft.UI.Input.FocusNavigationRequest) 。 然后，ContentIsland 的 InputFocusController 接收此 NavigateFocusRequested 事件，并可以决定是否获得焦点。

// Register
event_token NavigateFocusRequested(TypedEventHandler<InputFocusController, FocusNavigationRequestEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
InputFocusController::NavigateFocusRequested_revoker NavigateFocusRequested(auto_revoke_t, TypedEventHandler<InputFocusController, FocusNavigationRequestEventArgs const&> const& handler) const;

public event TypedEventHandler<InputFocusController,FocusNavigationRequestEventArgs> NavigateFocusRequested;

function onNavigateFocusRequested(eventArgs) { /* Your code */ }
inputFocusController.addEventListener("navigatefocusrequested", onNavigateFocusRequested);
inputFocusController.removeEventListener("navigatefocusrequested", onNavigateFocusRequested);
- or -
inputFocusController.onnavigatefocusrequested = onNavigateFocusRequested;

Public Custom Event NavigateFocusRequested As TypedEventHandler(Of InputFocusController, FocusNavigationRequestEventArgs) 

事件类型

TypedEventHandler<InputFocusController,FocusNavigationRequestEventArgs>

注解

设置 FocusNavigationRequestEventArgs 的结果值不会隐式设置焦点。 必须显式调用 TrySetFocus。