This block of code defines a GEvent.addListener which listens for any map movement (drag, drop, zoom, pan, map type change) and defines the appropriate action to take should it occur.
这段代码定义一个 GEvent.addListener ，它监听所有地图运动（拖、放、缩放、摇移、地图类型切换）并定义相应的操作。
Select an operation node in the source WSDLs panel and then drag and drop over any existing port type on the target WSDL panel.
选择WSDL面板上的一个操作结点，然后拖放目标WSDL面板上的任一现有的端口类型。
Because most users are accustomed to static pages and static page elements, there are very few, if any, Web applications that allow some type of drag and drop interaction.
因为大部分用户都习惯于静态页面和静态页面元素，所以支持拖放交互的Web应用程序非常少。
应用推荐