GeometryHitTestResult.IntersectionDetail 属性

定义

获取命中测试的 IntersectionDetail 值。Gets the IntersectionDetail value of the hit test.

public:
 property System::Windows::Media::IntersectionDetail IntersectionDetail { System::Windows::Media::IntersectionDetail get(); };
public System.Windows.Media.IntersectionDetail IntersectionDetail { get; }
member this.IntersectionDetail : System.Windows.Media.IntersectionDetail
Public ReadOnly Property IntersectionDetail As IntersectionDetail

属性值

命中测试的 IntersectionDetail 值。The IntersectionDetail value of the hit test.

示例

下面的示例演示如何使用IntersectionDetailGeometryHitTestResult属性。The following example shows how to use the IntersectionDetail property of GeometryHitTestResult.

// Return the result of the hit test to the callback.
public HitTestResultBehavior MyHitTestResultCallback(HitTestResult result)
{
    // Retrieve the results of the hit test.
    IntersectionDetail intersectionDetail = ((GeometryHitTestResult)result).IntersectionDetail;

    switch (intersectionDetail)
    {
        case IntersectionDetail.FullyContains:

            // Add the hit test result to the list that will be processed after the enumeration.
            hitResultsList.Add(result.VisualHit);

            return HitTestResultBehavior.Continue;

        case IntersectionDetail.Intersects:

            // Set the behavior to return visuals at all z-order levels.
            return HitTestResultBehavior.Continue;

        case IntersectionDetail.FullyInside:

            // Set the behavior to return visuals at all z-order levels.
            return HitTestResultBehavior.Continue;

        default:
            return HitTestResultBehavior.Stop;
    }
}
' Return the result of the hit test to the callback.
Public Function MyHitTestResultCallback(ByVal result As HitTestResult) As HitTestResultBehavior
    ' Retrieve the results of the hit test.
    Dim intersectionDetail As IntersectionDetail = (CType(result, GeometryHitTestResult)).IntersectionDetail

    Select Case intersectionDetail
        Case IntersectionDetail.FullyContains

            ' Add the hit test result to the list that will be processed after the enumeration.
            hitResultsList.Add(result.VisualHit)

            Return HitTestResultBehavior.Continue

        Case IntersectionDetail.Intersects

            ' Set the behavior to return visuals at all z-order levels.
            Return HitTestResultBehavior.Continue

        Case IntersectionDetail.FullyInside

            ' Set the behavior to return visuals at all z-order levels.
            Return HitTestResultBehavior.Continue

        Case Else
            Return HitTestResultBehavior.Stop
    End Select
End Function

注解

属性描述Geometry与目标可视对象之间的交集。 IntersectionDetailThe IntersectionDetail property describes the intersection between a Geometry and the target visual object.

下图显示了命中测试几何图形 (蓝色圆圈) 与目标对象 (红色正方形) 之间的关系。The following illustration shows the relationship between the hit test geometry (the blue circle) and the target object (the red square).

命中测试中使用的 System.windows.media.geometryhittestresult.intersectiondetail 关系图Diagram of IntersectionDetail used in hit testing
命中测试几何图形与目标对象之间的交集The intersection between a hit test geometry and a target object

适用于