WebUIApplication.LeavingBackground 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。
在应用即将离开后台和显示应用 UI 之前发生。
public:
static event LeavingBackgroundEventHandler ^ LeavingBackground;// Register
static event_token LeavingBackground(LeavingBackgroundEventHandler const& handler) const;
// Revoke with event_token
static void LeavingBackground(event_token const* cookie) const;
// Revoke with event_revoker
static WebUIApplication::LeavingBackground_revoker LeavingBackground(auto_revoke_t, LeavingBackgroundEventHandler const& handler) const;public static event LeavingBackgroundEventHandler LeavingBackground;function onLeavingBackground(eventArgs) { /* Your code */ }
Windows.UI.WebUI.WebUIApplication.addEventListener("leavingbackground", onLeavingBackground);
Windows.UI.WebUI.WebUIApplication.removeEventListener("leavingbackground", onLeavingBackground);
- or -
Windows.UI.WebUI.WebUIApplication.onleavingbackground = onLeavingBackground;Public Shared Custom Event LeavingBackground As LeavingBackgroundEventHandler 事件类型
Windows 要求
| 设备系列 |
Windows 10 Anniversary Edition (在 10.0.14393.0 中引入)
|
| API contract |
Windows.Foundation.UniversalApiContract (在 v3.0 中引入)
|