本实例是基于Canvas增加双击事件

public class RevitCanvas : Canvas    {        public RevitCanvas()        {            _oncetime = long.MaxValue;            Focusable = true;            this.AddHandler(Canvas.PreviewMouseDownEvent, new MouseButtonEventHandler(OnMouseDown));           //这里是使用使用双击事件哦            this.AddHandler(RevitCanvas.MouseDoubleClick, new RoutedEventHandler(OnMouseDoubleClick));        }        public static RoutedEvent MouseDoubleClick = EventManager.RegisterRoutedEvent("MouseDoubleClick", RoutingStrategy.Bubble, typeof(MouseButtonEventHandler), typeof(RevitCanvas));        protected void OnMouseDown(object sender, MouseButtonEventArgs e)        {            base.OnMouseDown(e);            //双击,两次单机距离不超过4像素，时间再0.5秒以内视为双击            Point p = e.GetPosition(this);            long time = DateTime.Now.Ticks;            if (Math.Abs(p.X - _oncePoint.X) < 4 && Math.Abs(p.Y - _oncePoint.Y) < 4 && (time - _oncetime < 5000000))            {                this.RaiseEvent(new RoutedEventArgs(RevitCanvas.MouseDoubleClick));//此处促发双击事件            }            _oncetime = time;            _oncePoint = p;        }        private void OnMouseDoubleClick(object sender, RoutedEventArgs e)        {           //我是双击事件哦        }        private Point _startPoint;        private long _oncetime;        private Point _oncePoint;    }

双击事件使用：

this.AddHandler(RevitCanvas.MouseDoubleClick, new RoutedEventHandler(OnMouseDoubleClick));        private void OnMouseDoubleClick(object sender, RoutedEventArgs e)        {           //我是双击事件哦        }