OCX容器控件，可遍历到拖放到其内部的控件，并对其做布局管理-OCX container control, can be traversed to drag it to its internal controls, and its layout manager to do

使用VC6开发的 支持文件拖放的 ActiveXObject 控件, 附带 完整的控件源码, 详细的 接口说明,和丰富的使用示例.-a ActiveXObject for File Drop support, use VC6.0. have VC source, Interface note and application samples.