PointHitTestResult PointHitTestResult PointHitTestResult PointHitTestResult Class

Определение

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

Наследование

ObjectObjectObjectObject

HitTestResultHitTestResultHitTestResultHitTestResult

PointHitTestResultPointHitTestResultPointHitTestResultPointHitTestResult

Производный

AdornerHitTestResultAdornerHitTestResultAdornerHitTestResultAdornerHitTestResult

Примеры

В следующем примере показано, PointHitTestResult как получить возвращаемое значение HitTest из метода.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

Комментарии

Можно также выполнить проверку нажатия для визуального объекта, используя в Geometry качестве параметра проверки нажатия и возвращая результат в GeometryHitTestResultвиде.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. Дополнительные сведения см. в разделе Практическое руководство. Проверка нажатия с использованием геометрии вкачестве параметра.For more information, see How to: Hit Test Using Geometry as a Parameter.

Конструкторы

Свойства

Методы

Применяется к