Application.LeavingBackground 事件

定義

命名空間:

Windows.UI.Xaml

發生于應用程式從背景移至前景時。

public:
 virtual event LeavingBackgroundEventHandler ^ LeavingBackground;

// Register
event_token LeavingBackground(LeavingBackgroundEventHandler const& handler) const;

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

// Revoke with event_revoker
Application::LeavingBackground_revoker LeavingBackground(auto_revoke_t, LeavingBackgroundEventHandler const& handler) const;

public event LeavingBackgroundEventHandler LeavingBackground;

function onLeavingBackground(eventArgs) { /* Your code */ }
application.addEventListener("leavingbackground", onLeavingBackground);
application.removeEventListener("leavingbackground", onLeavingBackground);
- or -
application.onleavingbackground = onLeavingBackground;

Public Custom Event LeavingBackground As LeavingBackgroundEventHandler 

事件類型

LeavingBackgroundEventHandler

Windows 需求

裝置系列	Windows 10 Anniversary Edition (已於 10.0.14393.0 引進)
API contract	Windows.Foundation.UniversalApiContract (已於 v3.0 引進)

備註

LeavingBackground 事件會在註冊所在的相同 Apartment 中執行。

另請參閱

• 處理執行緒和 Apartment