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InputActivationListener 類別

  • 參考

定義

命名空間:
Microsoft.UI.Input
編輯

提供存取和觀察物件啟用狀態變更的能力。

public ref class InputActivationListener sealed : InputObject
/// [Windows.Foundation.Metadata.ContractVersion(Microsoft.Foundation.WindowsAppSDKContract, 65537)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class InputActivationListener final : InputObject
[Windows.Foundation.Metadata.ContractVersion(typeof(Microsoft.Foundation.WindowsAppSDKContract), 65537)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class InputActivationListener : InputObject
Public NotInheritable Class InputActivationListener
Inherits InputObject
繼承
Object Platform::Object IInspectable InputObject InputActivationListener
屬性
ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

範例

下列Windows 應用程式 SDK範例示範如何回應 物件的啟用事件 Microsoft.UI.Windowing.AppWindow ：

class RespondToAppWindowActivation
{
    InputActivationListener inputActivationListener;

    public RespondToAppWindowActivation(Microsoft.UI.Windowing.AppWindow appWindow)
    {
        inputActivationListener = InputActivationListener.GetForWindowId(appWindow.Id);

        inputActivationListener.InputActivationChanged += OnActivationChanged;
    }

    void OnActivationChanged(
        InputActivationListener sender,
        InputActivationListenerActivationChangedEventArgs args)
    {
        if (sender.State == InputActivationState.Activated)
        {
            System.Diagnostics.Debug.WriteLine("AppWindow was activated.");

            LeaveMyBackgroundMode();
        }
        else
        {
            System.Diagnostics.Debug.WriteLine("AppWindow was deactivated.");

            EnterMyBackgroundMode();
        }
    }
}

備註

如果已終結與 InputActivationListener 相關聯的物件，則會隱含處置 InputActivationListener 物件。 如需詳細資訊 ，請參閱 InputObject 。

屬性

DispatcherQueue

取得 InputObject 的 DispatcherQueue 。

(繼承來源 InputObject)
State

取得 物件的啟用狀態。

方法

GetForIsland(ContentIsland)

擷 InputActivationListener 取指定 ContentIsland的物件。
GetForWindowId(WindowId)

擷 InputActivationListener 取指定最上層視窗的 物件。

事件

InputActivationChanged

發生于相關聯物件的輸入啟用狀態變更時。

適用於

另請參閱