Window.VisibilityChanged 事件

定义

命名空间:

Microsoft.UI.Xaml

当 Visible 属性的值发生更改时发生。

// Register
event_token VisibilityChanged(TypedEventHandler<IInspectable, WindowVisibilityChangedEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
Window::VisibilityChanged_revoker VisibilityChanged(auto_revoke_t, TypedEventHandler<IInspectable, WindowVisibilityChangedEventArgs const&> const& handler) const;

public event TypedEventHandler<object,WindowVisibilityChangedEventArgs> VisibilityChanged;

function onVisibilityChanged(eventArgs) { /* Your code */ }
window.addEventListener("visibilitychanged", onVisibilityChanged);
window.removeEventListener("visibilitychanged", onVisibilityChanged);
- or -
window.onvisibilitychanged = onVisibilityChanged;

Public Custom Event VisibilityChanged As TypedEventHandler(Of Object, WindowVisibilityChangedEventArgs) 

事件类型

TypedEventHandler<Object,WindowVisibilityChangedEventArgs>

TypedEventHandler<IInspectable,WindowVisibilityChangedEventArgs>

注解

VisibilityChangedEventArgs 包含一个布尔 Visible 属性，应该检查该属性以确定当前的可见性状态。

另请参阅

• VisibilityChangedEventArgs