PointHitTestResult 類別

定義

public ref class PointHitTestResult : System::Windows::Media::HitTestResult

public class PointHitTestResult : System.Windows.Media.HitTestResult

type PointHitTestResult = class
    inherit HitTestResult

Public Class PointHitTestResult
Inherits HitTestResult

繼承

Object

HitTestResult

PointHitTestResult

衍生

System.Windows.Media.AdornerHitTestResult

範例

下列範例顯示如何 PointHitTestResult 從方法中取出傳回值 HitTest 。The following example shows how to retrieve the PointHitTestResult return value from the HitTest method.

// 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

備註

您也可以使用 Geometry 做為點擊測試參數，並以的形式傳回結果，對視覺物件執行點擊測試 GeometryHitTestResult 。You can also perform a hit test on a visual object by using a Geometry as a hit test parameter and returning the result as a GeometryHitTestResult. 如需詳細資訊，請參閱 如何：使用 Geometry 做為參數進行點擊測試。For more information, see How to: Hit Test Using Geometry as a Parameter.

建構函式

屬性

方法

適用於