Strokes.StrokesAdded (Evento)

Artículo
11/26/2008

Actualización: noviembre 2007

Se produce cuando se agregan uno o más objetos Stroke a la colección Strokes.

Espacio de nombres: Microsoft.Ink
Ensamblado: Microsoft.Ink (en Microsoft.Ink.dll)

Sintaxis

'Declaración
Public Event StrokesAdded As StrokesEventHandler
'Uso
Dim instance As Strokes
Dim handler As StrokesEventHandler

AddHandler instance.StrokesAdded, handler

public event StrokesEventHandler StrokesAdded

public:
 event StrokesEventHandler^ StrokesAdded {
    void add (StrokesEventHandler^ value);
    void remove (StrokesEventHandler^ value);
}

/** @event */
public void add_StrokesAdded (StrokesEventHandler value)
/** @event */
public void remove_StrokesAdded (StrokesEventHandler value)

JScript no admite eventos.

Comentarios

El controlador de eventos recibe un argumento de tipo StrokesEventArgs que contiene datos sobre este evento.

Cuando se crea un delegado de StrokesEventHandler, se identifica el método que controla el evento. Para asociar el evento al controlador de eventos, se debe agregar al evento una instancia del delegado. Siempre que se produce el evento se llama al controlador de eventos, a menos que se quite el delegado.

Ejemplos

En este ejemplo, un controlador de eventos StrokesAdded gira los trazos recién agregados 90 grados en el sentido de las agujas del reloj. El giro se produce alrededor del centro del cuadro de límite del objeto Stroke recién agregado.

' Reminder: To avoid a memory leak, you must explicitly call the Dispose() method 
' on any Strokes collection to which an event handler has been attached before 
' the collection goes out of scope. 
Private Sub Strokes_StrokesAdded(ByVal sender As Object, ByVal e As StrokesEventArgs)
    ' check each stroke id passed to the handler
    For Each id As Integer In e.StrokeIds
        ' find the Stroke
        For Each oneStroke As Stroke In DirectCast(sender, Strokes)
            ' when we find the added stroke, rotate it 
            If (oneStroke.Id = id) Then
                Dim bounds As Rectangle = oneStroke.GetBoundingBox()
                ' create a point at the center of bounding box
                Dim center As Point = New Point(bounds.Left + (bounds.Width / 2), bounds.Top + (bounds.Height / 2))
                ' rotate the stroke
                oneStroke.Rotate(90, center)
            End If
        Next
    Next
End Sub

// Reminder: To avoid a memory leak, you must explicitly call the Dispose() method 
// on any Strokes collection to which an event handler has been attached before 
// the collection goes out of scope. 
private void Strokes_StrokesAdded(object sender, StrokesEventArgs e)
{
    // check each stroke id passed to the handler
    foreach (int id in e.StrokeIds)
    {
        // find the Stroke
        foreach (Stroke oneStroke in (Strokes)sender)
        {
            // when we find the added stroke, rotate it 
            if (oneStroke.Id == id)
            {
                Rectangle bounds = oneStroke.GetBoundingBox();
                // create a point at the center of bounding box
                Point center = new Point(bounds.Left + (bounds.Width / 2), bounds.Top + (bounds.Height / 2));
                // rotate the stroke
                oneStroke.Rotate(90, center);
            }
        }
    }

}

Plataformas

Windows Vista

.NET Framework y .NET Compact Framework no admiten todas las versiones de cada plataforma. Para obtener una lista de las versiones compatibles, vea Requisitos de sistema de .NET Framework.