WPF实现双击事件MouseDoubleClick

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) <  && Math.Abs(p.Y - _oncePoint.Y) <  && (time - _oncetime < ))

            {

                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

        }