HoldingRoutedEventArgs 类

定义

命名空间:

Windows.UI.Xaml.Input

为 Holding 事件提供事件数据。

public ref class HoldingRoutedEventArgs sealed : RoutedEventArgs

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
class HoldingRoutedEventArgs final : RoutedEventArgs

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
public sealed class HoldingRoutedEventArgs : RoutedEventArgs

Public NotInheritable Class HoldingRoutedEventArgs
Inherits RoutedEventArgs

继承

Object Platform::Object IInspectable RoutedEventArgs HoldingRoutedEventArgs

属性

ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Windows 要求

设备系列	Windows 10 (在 10.0.10240.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v1.0 中引入)

示例

以下代码片段来自基本输入示例的方案 1 - 输入事件。

Scenario1::Scenario1()
{
    InitializeComponent();

    // pointer press/release handlers
    pressedTarget.PointerPressed(this, &Scenario1::target_PointerPressed);
    pressedTarget.PointerReleased(this, &Scenario1::target_PointerReleased);

    // pointer enter/exit handlers
    enterExitTarget.PointerEntered(this, &Scenario1::target_PointerEntered);
    enterExitTarget.PointerExited(this, &Scenario1::target_PointerExited);

    // gesture handlers
    tapTarget.Tapped(this, &Scenario1::target_Tapped);
    tapTarget.DoubleTapped(this, &Scenario1::target_DoubleTapped);

    holdTarget.Holding(this, &Scenario1::target_Holding);
    holdTarget.RightTapped(this, &Scenario1::target_RightTapped);
}

void Scenario1::target_Holding(Windows::Foundation::IInspectable const&, Windows::UI::Xaml::Input::HoldingRoutedEventArgs const& args)
{
    if (args.HoldingState() == Windows::UI::Input::HoldingState::Started)
    {
        holdTarget.Background(Windows::UI::Xaml::Media::SolidColorBrush(Windows::UI::Colors::DeepSkyBlue()));
        holdTargetText.Text(L"Holding");
    }
    else if (args.HoldingState() == Windows::UI::Input::HoldingState::Completed)
    {
        holdTarget.Background(Windows::UI::Xaml::Media::SolidColorBrush(Windows::UI::Colors::LightGray()));
        holdTargetText.Text(L"Held");
    }
    else
    {
        holdTarget.Background(Windows::UI::Xaml::Media::SolidColorBrush(Windows::UI::Colors::LightGray()));
        holdTargetText.Text(L"Hold Canceled");
    }
}

Scenario1::Scenario1()
{
    InitializeComponent();

    // pointer press/release handlers
    pressedTarget->PointerPressed += ref new PointerEventHandler(this, &Scenario1::target_PointerPressed);
    pressedTarget->PointerReleased += ref new PointerEventHandler(this, &Scenario1::target_PointerReleased);

    // pointer enter/exit handlers
    enterExitTarget->PointerEntered += ref new PointerEventHandler(this, &Scenario1::target_PointerEntered);
    enterExitTarget->PointerExited += ref new PointerEventHandler(this, &Scenario1::target_PointerExited);

    // gesture handlers
    tapTarget->Tapped += ref new TappedEventHandler(this, &Scenario1::target_Tapped);
    tapTarget->DoubleTapped += ref new DoubleTappedEventHandler(this, &Scenario1::target_DoubleTapped);

    holdTarget->Holding += ref new HoldingEventHandler(this, &Scenario1::target_Holding);
    holdTarget->RightTapped += ref new RightTappedEventHandler(this, &Scenario1::target_RightTapped);
}

void Scenario1::target_Holding(Object^ sender, HoldingRoutedEventArgs^ e)
{
    if (e->HoldingState == Windows::UI::Input::HoldingState::Started)
    {
        holdTarget->Background = ref new SolidColorBrush(Windows::UI::Colors::DeepSkyBlue);
        holdTargetText->Text = "Holding";
    }
    else if (e->HoldingState == Windows::UI::Input::HoldingState::Completed)
    {
        holdTarget->Background = ref new SolidColorBrush(Windows::UI::Colors::LightGray);
        holdTargetText->Text = "Held";
    }
    else
    {
        holdTarget->Background = ref new SolidColorBrush(Windows::UI::Colors::LightGray);
        holdTargetText->Text = "Hold Canceled";
    }
}

public Scenario1()
{
    this.InitializeComponent();

    // pointer press/release handlers
    pressedTarget.PointerPressed += new PointerEventHandler(target_PointerPressed);
    pressedTarget.PointerReleased += new PointerEventHandler(target_PointerReleased);

    // pointer enter/exit handlers
    enterExitTarget.PointerEntered += new PointerEventHandler(target_PointerEntered);
    enterExitTarget.PointerExited += new PointerEventHandler(target_PointerExited);

    // gesture handlers
    tapTarget.Tapped += new TappedEventHandler(target_Tapped);
    tapTarget.DoubleTapped += new DoubleTappedEventHandler(target_DoubleTapped);
    holdTarget.Holding += new HoldingEventHandler(target_Holding);
    holdTarget.RightTapped += new RightTappedEventHandler(target_RightTapped);
}

void target_Holding(object sender, HoldingRoutedEventArgs e)
{
    if (e.HoldingState == Windows.UI.Input.HoldingState.Started)
    {
        holdTarget.Background = new SolidColorBrush(Windows.UI.Colors.DeepSkyBlue);
        holdTargetText.Text = "Holding";
    }
    else if (e.HoldingState == Windows.UI.Input.HoldingState.Completed)
    {
        holdTarget.Background = new SolidColorBrush(Windows.UI.Colors.LightGray);
        holdTargetText.Text = "Held";
    }
    else
    {
        holdTarget.Background = new SolidColorBrush(Windows.UI.Colors.LightGray);
        holdTargetText.Text = "Hold Canceled";
    }
}

Public Sub New()
    Me.InitializeComponent()
    AddHandler pressedTarget.PointerPressed, New PointerEventHandler(AddressOf target_PointerPressed)
    AddHandler pressedTarget.PointerReleased, New PointerEventHandler(AddressOf target_PointerReleased)
    AddHandler enterExitTarget.PointerEntered, New PointerEventHandler(AddressOf target_PointerEntered)
    AddHandler enterExitTarget.PointerExited, New PointerEventHandler(AddressOf target_PointerExited)
    AddHandler tapTarget.Tapped, New TappedEventHandler(AddressOf target_Tapped)
    AddHandler tapTarget.DoubleTapped, New DoubleTappedEventHandler(AddressOf target_DoubleTapped)
    AddHandler holdTarget.Holding, New HoldingEventHandler(AddressOf target_Holding)
    AddHandler holdTarget.RightTapped, New RightTappedEventHandler(AddressOf target_RightTapped)
End Sub

Sub target_Holding(sender As Object, e As HoldingRoutedEventArgs)
    If e.HoldingState = Windows.UI.Input.HoldingState.Started Then
        holdTarget.Background = New SolidColorBrush(Windows.UI.Colors.DeepSkyBlue)
        holdTargetText.Text = "Holding"
    ElseIf e.HoldingState = Windows.UI.Input.HoldingState.Completed Then
        holdTarget.Background = New SolidColorBrush(Windows.UI.Colors.LightGray)
        holdTargetText.Text = "Held"
    Else
        holdTarget.Background = New SolidColorBrush(Windows.UI.Colors.LightGray)
        holdTargetText.Text = "Hold Canceled"
    End If
End Sub

注解

每当在对象上按下并按住手指、笔或类似的指针设备时，将发送 Holding 事件。

经过短时间阈值后，将发送事件，其中包含类型为 Started 的 HoldingState。

当设备在保留事件) 后 (被抬起时，将发送另一个 Holding 事件，其中包含类型为 Completed 的 HoldingState。

如果用户在启动后取消保留，但在它完成之前，将发送一个 Holding 事件，其中包含类型为 Canceled 的 HoldingState。

构造函数

HoldingRoutedEventArgs()

初始化 HoldingRoutedEventArgs 类的新实例。

属性

Handled	获取或设置一个值，该值将路由事件标记为已处理。 Handled 的 true 值可防止事件路由中的大多数处理程序再次处理同一事件。
HoldingState	获取交互的基础 HoldingState
OriginalSource	获取对引发 事件的 对象的引用。 这通常是控件的模板部分，而不是在应用 UI 中声明的元素。 (继承自 RoutedEventArgs)
PointerDeviceType	获取启动关联输入事件的指针设备的 PointerDeviceType 。

方法

GetPosition(UIElement)

返回指针位置的 x 坐标和 y 坐标，可以选择根据提供的 UIElement 的坐标原点求值。

另请参阅

• RoutedEventArgs
• 基本输入示例