UIElement.NoFocusCandidateFound 事件

  • 参考

定义

命名空间:
Windows.UI.Xaml
编辑

当用户尝试通过制表键或方向箭头 (移动焦点) ，但焦点不会移动时发生，因为移动方向上找不到焦点候选项。

// Register
event_token NoFocusCandidateFound(TypedEventHandler<UIElement, NoFocusCandidateFoundEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
UIElement::NoFocusCandidateFound_revoker NoFocusCandidateFound(auto_revoke_t, TypedEventHandler<UIElement, NoFocusCandidateFoundEventArgs const&> const& handler) const;
public event TypedEventHandler<UIElement,NoFocusCandidateFoundEventArgs> NoFocusCandidateFound;
function onNoFocusCandidateFound(eventArgs) { /* Your code */ }
uIElement.addEventListener("nofocuscandidatefound", onNoFocusCandidateFound);
uIElement.removeEventListener("nofocuscandidatefound", onNoFocusCandidateFound);
- or -
uIElement.onnofocuscandidatefound = onNoFocusCandidateFound;
Public Custom Event NoFocusCandidateFound As TypedEventHandler(Of UIElement, NoFocusCandidateFoundEventArgs) 
<uiElement NoFocusCandidateFound="eventhandler"/>

事件类型

TypedEventHandler<UIElement,NoFocusCandidateFoundEventArgs>

Windows 要求

设备系列
Windows 10 Creators Update (在 10.0.15063.0 中引入)
API contract
Windows.Foundation.UniversalApiContract (在 v4.0 中引入)

注解

NoFocusCandidateFound 是路由事件。 有关路由事件概念的详细信息，请参阅 事件和路由事件概述。

适用于

另请参阅