说明：  VB实现的子类化文件拖拽打开实例源码，能实现List Text控件的文件拖放打开功能，也支持多文件同时拖放打开的功能。用拖拽的方式把需要打开的文件图标，拖放到本窗口中，即可将路径显示在窗口中。。
(VB implementation of the subclass of drag and drop files open source code examples, can realize the List Text control files open function, can simultaneously support multiple file drag and drop open function. Use drag and drop the need to open the file icon, drag and drop to the window, the path is displayed in a window)