HitTestResult Classe

Definição

Fornece a classe base para várias classes derivadas, que representa o valor retornado de um teste de clique.Provides the base class for several derived classes that represents the return value from a hit test.

public ref class HitTestResult abstract
public abstract class HitTestResult
type HitTestResult = class
Public MustInherit Class HitTestResult
Herança
HitTestResult
Derivado

Exemplos

O exemplo a seguir mostra como recuperar o HitTestResult valor HitTest de retorno do método.The following example shows how to retrieve the HitTestResult 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

Comentários

As PointHitTestResultclasses GeometryHitTestResult, HitTestResulte RayHitTestResult derivam de.The PointHitTestResult, GeometryHitTestResult, and RayHitTestResult classes derive from HitTestResult.

Propriedades

VisualHit

Obtém o objeto visual que foi atingido.Gets the visual object that was hit.

Métodos

Equals(Object)

Determina se o objeto especificado é igual ao objeto atual.Determines whether the specified object is equal to the current object.

(Herdado de Object)
GetHashCode()

Serve como a função de hash padrão.Serves as the default hash function.

(Herdado de Object)
GetType()

Obtém o Type da instância atual.Gets the Type of the current instance.

(Herdado de Object)
MemberwiseClone()

Cria uma cópia superficial do Object atual.Creates a shallow copy of the current Object.

(Herdado de Object)
ToString()

Retorna uma cadeia de caracteres que representa o objeto atual.Returns a string that represents the current object.

(Herdado de Object)

Aplica-se a

Veja também