PointerPoint 类

定义

命名空间:

Microsoft.UI.Input

提供与单个鼠标、笔/触笔或触摸触点关联的输入指针的基本属性。

public ref class PointerPoint sealed

/// [Windows.Foundation.Metadata.ContractVersion(Microsoft.Foundation.WindowsAppSDKContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class PointerPoint final

[Windows.Foundation.Metadata.ContractVersion(typeof(Microsoft.Foundation.WindowsAppSDKContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class PointerPoint

Public NotInheritable Class PointerPoint

继承

Object Platform::Object IInspectable PointerPoint

属性

ContractVersionAttribute MarshalingBehaviorAttribute

示例

在下面的示例中，我们使用 PointerPoint 对象查询各种指针属性。

private string queryPointer(PointerPoint ptrPt)
{
    String details = "";

    switch (ptrPt.PointerDeviceType)
    {
        case PointerDeviceType.Mouse:
            details += "\nPointer type: mouse";
            break;
        case PointerDeviceType.Pen:
            details += "\nPointer type: pen";
            if (ptrPt.IsInContact)
            {
                details += "\nPressure: " + ptrPt.Properties.Pressure;
                details += "\nrotation: " + ptrPt.Properties.Orientation;
                details += "\nTilt X: " + ptrPt.Properties.XTilt;
                details += "\nTilt Y: " + ptrPt.Properties.YTilt;
                details += "\nBarrel button pressed: " + ptrPt.Properties.IsBarrelButtonPressed;
            }
            break;
        case PointerDeviceType.Touch:
            details += "\nPointer type: touch";
            details += "\nrotation: " + ptrPt.Properties.Orientation;
            details += "\nTilt X: " + ptrPt.Properties.XTilt;
            details += "\nTilt Y: " + ptrPt.Properties.YTilt;
            break;
        default:
            details += "\nPointer type: n/a";
            break;
    }

    details += "\nPointer Id: " + ptrPt.PointerId.ToString() +
        "\nPointer location: " + ptrPt.Position.X + ", " + ptrPt.Position.Y;

    return details;
}

注解

有关可通过 Properties 访问的扩展属性，请参阅 PointerPointProperties。

PointerPoint 坐标空间取决于检索它的上下文。 从 PointerRoutedEventArgs.GetCurrentPoint 检索时，指针的坐标将相对于提供的 UIElement （以与设备无关的像素为单位）。

属性

FrameId	获取输入帧的 ID。
IsInContact	获取一个值，该值指示输入设备 (触摸、笔/触笔) 按下 (触摸) 数字化器表面，还是按下鼠标按钮。
PointerDeviceType	获取与输入指针关联的输入设备类型。
PointerId	获取输入指针的唯一标识符。
Position	获取输入指针的位置。
Properties	获取有关输入指针的扩展信息。
Timestamp	获取输入发生的时间。

方法

GetTransformedPoint(IPointerPointTransform)

通过使用应用程序定义的转换转换当前 PointerPoint 来检索新的 PointerPoint 对象。

另请参阅

• PointerPointProperties
• PointerRoutedEventArgs