HitTestResult Kelas

Definisi

Ruang nama:

System.Windows.Media

Rakitan:

PresentationCore.dll

Menyediakan kelas dasar untuk beberapa kelas turunan yang mewakili nilai pengembalian dari tes hit.

public ref class HitTestResult abstract

public abstract class HitTestResult

type HitTestResult = class

Public MustInherit Class HitTestResult

Warisan

Object

HitTestResult

Turunan

System.Windows.Media.GeometryHitTestResult

System.Windows.Media.Media3D.RayHitTestResult

System.Windows.Media.PointHitTestResult

Contoh

Contoh berikut menunjukkan cara mengambil nilai pengembalian HitTestResult dari HitTest metode .

// Respond to the left mouse button down event by initiating the hit test.
private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    // Retrieve the coordinate of the mouse position.
    Point pt = e.GetPosition((UIElement)sender);

    // Perform the hit test against a given portion of the visual object tree.
    HitTestResult result = VisualTreeHelper.HitTest(myCanvas, pt);

    if (result != null)
    {
        // Perform action on hit visual object.
    }
}

' Respond to the left mouse button down event by initiating the hit test.
Private Overloads Sub OnMouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
    ' Retrieve the coordinate of the mouse position.
    Dim pt As Point = e.GetPosition(CType(sender, UIElement))

    ' Perform the hit test against a given portion of the visual object tree.
    Dim result As HitTestResult = VisualTreeHelper.HitTest(myCanvas, pt)

    If result IsNot Nothing Then
        ' Perform action on hit visual object.
    End If
End Sub

Keterangan

Kelas PointHitTestResult, GeometryHitTestResult, dan RayHitTestResult berasal dari HitTestResult.

Properti

Nama	Deskripsi
VisualHit	Mendapatkan objek visual yang tertembak.

Lihat juga

• Uji Tabrakan Menggunakan DrawingVisuals Sample