ContainerVisual.HitTest Método

public:
 System::Windows::Media::HitTestResult ^ HitTest(System::Windows::Point point);

public System.Windows.Media.HitTestResult HitTest (System.Windows.Point point);

override this.HitTest : System.Windows.Point -> System.Windows.Media.HitTestResult

member this.HitTest : System.Windows.Point -> System.Windows.Media.HitTestResult

Public Function HitTest (point As Point) As HitTestResult

Parámetros

Devoluciones

El resultado de la prueba de posicionamiento del objeto visual devuelto como un tipo HitTestResult.

Ejemplos

En el ejemplo siguiente se muestra cómo recuperar el HitTestResult valor devuelto del HitTest método .

// Capture the mouse event and hit test the coordinate point value against
// the child visual objects.
void MyVisualHost_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
    // Retrieve the coordinates of the mouse button event.
    Point pt = e.GetPosition((UIElement)sender);

    // Initiate the hit test on the ContainerVisual's visual tree.
    HitTestResult result = _containerVisual.HitTest(pt);

    // Perform the action on the hit visual.
    if (result.VisualHit != null)
    {
        ProcessHitVisual((Visual)result.VisualHit);
    }
}

' Capture the mouse event and hit test the coordinate point value against
' the child visual objects.
Private Sub MyVisualHost_MouseLeftButtonUp(ByVal sender As Object, ByVal e As System.Windows.Input.MouseButtonEventArgs)
    ' Retrieve the coordinates of the mouse button event.
    Dim pt As Point = e.GetPosition(CType(sender, UIElement))

    ' Initiate the hit test on the ContainerVisual's visual tree.
    Dim result As HitTestResult = _containerVisual.HitTest(pt)

    ' Perform the action on the hit visual.
    If result.VisualHit IsNot Nothing Then
        ProcessHitVisual(CType(result.VisualHit, Visual))
    End If
End Sub

Comentarios

La VisualHit propiedad del valor devuelto representa el Visual objeto al que se ha alcanzado.

public:
 void HitTest(System::Windows::Media::HitTestFilterCallback ^ filterCallback, System::Windows::Media::HitTestResultCallback ^ resultCallback, System::Windows::Media::HitTestParameters ^ hitTestParameters);

public void HitTest (System.Windows.Media.HitTestFilterCallback filterCallback, System.Windows.Media.HitTestResultCallback resultCallback, System.Windows.Media.HitTestParameters hitTestParameters);

override this.HitTest : System.Windows.Media.HitTestFilterCallback * System.Windows.Media.HitTestResultCallback * System.Windows.Media.HitTestParameters -> unit

member this.HitTest : System.Windows.Media.HitTestFilterCallback * System.Windows.Media.HitTestResultCallback * System.Windows.Media.HitTestParameters -> unit

Public Sub HitTest (filterCallback As HitTestFilterCallback, resultCallback As HitTestResultCallback, hitTestParameters As HitTestParameters)

Parámetros

Comentarios

El filterCallback parámetro puede ser null, en cuyo caso se omite. Si filterCallback no nulles , se invoca antes resultCallbackde .