свойства зависимости

[sergei64_89]

//новый класс
public static readonly DependencyProperty xx = DependencyProperty.Register("p1", typeof(Point), typeof(myline), new FrameworkPropertyMetadata(new Point()), new ValidateValueCallback(draw));

public Point p1
{
set { SetValue(xx, value); }
get { return (Point)GetValue(xx); }
}
static bool draw(object value)
{

MessageBox.Show("sdf");

return true;
}
//часть кода канвы
Point p = new Point(9, 9);
public void addline(myellipse el1,myellipse el2)
{
myline line = new myline();
children.Add(line);

base.AddLogicalChild(line);
base.AddVisualChild(line);
line.bind = new Binding("p");
line.bind.Source =this;

BindingOperations.SetBinding(line, myline.xx, line.bind);
}
protected override void OnMouseMove(System.Windows.Input.MouseEventArgs e)
{
base.OnMouseMove(e);

p = e.GetPosition(this); //тут не выскакивает событие "sdf"

}