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C# RoutedEventArgs.OverrideSource方法代码示例

本文整理汇总了C#中System.Windows.RoutedEventArgs.OverrideSource方法的典型用法代码示例。如果您正苦于以下问题:C# RoutedEventArgs.OverrideSource方法的具体用法?C# RoutedEventArgs.OverrideSource怎么用?C# RoutedEventArgs.OverrideSource使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Windows.RoutedEventArgs的用法示例。


在下文中一共展示了RoutedEventArgs.OverrideSource方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: ReRaiseEventAs

        /// <summary>
        ///     Re-raises an event with as a different RoutedEvent.
        /// </summary>
        /// <remarks>
        ///     Only used internally.  Added to support cracking generic MouseButtonDown/Up events
        ///     into MouseLeft/RightButtonDown/Up events.
        /// </remarks>
        /// <param name="args">
        ///     RoutedEventsArgs to re-raise with a new RoutedEvent
        /// </param>
        /// <param name="newEvent">
        ///     The new RoutedEvent to be associated with the RoutedEventArgs
        /// </param>
        private static void ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
        {
            // Preseve and change the RoutedEvent
            RoutedEvent preservedRoutedEvent = args.RoutedEvent;
            args.OverrideRoutedEvent( newEvent );

            // Preserve Source
            object preservedSource = args.Source;

            EventRoute route = EventRouteFactory.FetchObject(args.RoutedEvent);

            if( TraceRoutedEvent.IsEnabled )
            {
                TraceRoutedEvent.Trace(
                    TraceEventType.Start,
                    TraceRoutedEvent.ReRaiseEventAs,
                    args.RoutedEvent,
                    sender,
                    args,
                    args.Handled );
            }

            try
            {
                // Build the route and invoke the handlers
                UIElement.BuildRouteHelper(sender, route, args);

                route.ReInvokeHandlers(sender, args);

                // Restore Source
                args.OverrideSource(preservedSource);

                // Restore RoutedEvent
                args.OverrideRoutedEvent(preservedRoutedEvent);

            }

            finally
            {
                if( TraceRoutedEvent.IsEnabled )
                {
                    TraceRoutedEvent.Trace(
                        TraceEventType.Stop,
                        TraceRoutedEvent.ReRaiseEventAs,
                        args.RoutedEvent,
                        sender,
                        args,
                        args.Handled );
                }
            }

            // Recycle the route object
            EventRouteFactory.RecycleObject(route);
        }
开发者ID:nlh774,项目名称:DotNetReferenceSource,代码行数:67,代码来源:UIElement.cs


注:本文中的System.Windows.RoutedEventArgs.OverrideSource方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。