IncrementalLassoHitTester Classe

Definição

public ref class IncrementalLassoHitTester : System::Windows::Ink::IncrementalHitTester

public class IncrementalLassoHitTester : System.Windows.Ink.IncrementalHitTester

type IncrementalLassoHitTester = class
    inherit IncrementalHitTester

Public Class IncrementalLassoHitTester
Inherits IncrementalHitTester

Herança

Object

IncrementalHitTester

IncrementalLassoHitTester

Exemplos

O exemplo seguinte demonstra como selecionar dinamicamente traços num controlo personalizado. Para a amostra completa, veja Como: Selecionar Tinta a partir de um Controlo Personalizado

void selectionTester_SelectionChanged(object sender,
    LassoSelectionChangedEventArgs args)
{
    // Change the color of all selected strokes to red.
    foreach (Stroke selectedStroke in args.SelectedStrokes)
    {
        selectedStroke.DrawingAttributes.Color = Colors.Red;
        selectedStrokes.Add(selectedStroke);
    }

    // Change the color of all unselected strokes to 
    // their original color.
    foreach (Stroke unselectedStroke in args.DeselectedStrokes)
    {
        unselectedStroke.DrawingAttributes.Color = inkDA.Color;
        selectedStrokes.Remove(unselectedStroke);
    }
}

Private Sub selectionTester_SelectionChanged(ByVal sender As Object, _
    ByVal args As LassoSelectionChangedEventArgs)

    ' Change the color of all selected strokes to red.
    For Each selectedStroke As Stroke In args.SelectedStrokes
        selectedStroke.DrawingAttributes.Color = Colors.Red
        selectedStrokes.Add(selectedStroke)
    Next selectedStroke

    ' Change the color of all unselected strokes to 
    ' their original color.
    For Each unselectedStroke As Stroke In args.DeselectedStrokes
        unselectedStroke.DrawingAttributes.Color = inkDA.Color
        selectedStrokes.Remove(unselectedStroke)
    Next unselectedStroke

End Sub

Observações

O IncrementalLassoHitTester golpe testa os traços determinando se um percurso de laço o rodeia. Use o AddPoints método nos eventos da stylus para adicionar os pontos ao IncrementalLassoHitTester. Quando os pontos adicionados ao IncrementalLassoHitTester selecionam ou desmarcam um Stroke, o IncrementalLassoHitTester evento aumenta SelectionChanged