ISystemBackdropControllerWithTargets.StateChanged 事件

  • 参考

定义

命名空间:
Microsoft.UI.Composition.SystemBackdrops
编辑

当系统背景的状态发生更改时发生。

// Register
event_token StateChanged(TypedEventHandler<ISystemBackdropControllerWithTargets, IInspectable const&> const& handler) const;

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

// Revoke with event_revoker
ISystemBackdropControllerWithTargets::StateChanged_revoker StateChanged(auto_revoke_t, TypedEventHandler<ISystemBackdropControllerWithTargets, IInspectable const&> const& handler) const;
event TypedEventHandler<ISystemBackdropControllerWithTargets,object> StateChanged;
function onStateChanged(eventArgs) { /* Your code */ }
iSystemBackdropControllerWithTargets.addEventListener("statechanged", onStateChanged);
iSystemBackdropControllerWithTargets.removeEventListener("statechanged", onStateChanged);
- or -
iSystemBackdropControllerWithTargets.onstatechanged = onStateChanged;
Event StateChanged As TypedEventHandler(Of ISystemBackdropControllerWithTargets, Object)

事件类型

TypedEventHandler<ISystemBackdropControllerWithTargets,Object>

TypedEventHandler<ISystemBackdropControllerWithTargets,IInspectable>

注解

可以订阅此事件，以便当 SystemBackdropState 在 和 Fallback/High Contrast之间Active更改时收到通知。 例如，你可能想要根据系统背景材料状态更新其他非系统背景 UI。

适用于

另请参阅