GeometryHitTestResult.IntersectionDetail Property

Definition

Namespace:

System.Windows.Media

Assembly:

PresentationCore.dll

Gets the IntersectionDetail value of the hit test.

C#

public System.Windows.Media.IntersectionDetail IntersectionDetail { get; }

Property Value

IntersectionDetail

The IntersectionDetail value of the hit test.

Examples

The following example shows how to use the IntersectionDetail property of GeometryHitTestResult.

C#

// 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;
    }
}

Remarks

The IntersectionDetail property describes the intersection between a Geometry and the target visual object.

The following illustration shows the relationship between the hit test geometry (the blue circle) and the target object (the red square).

The intersection between a hit test geometry and a target object

Applies to