自己编写的基于VB+MO的图形元素编辑代码，可以实现针对map控件中的线或面元素，使其显示节点并且拖动节点改变其原有形状-their preparation for the VB MO graphics editing element code map can be achieved against the control line or surface elements, it would show the nodes and nodes Drag change its original sh

滑动条控件，可以拖动控件上的两个点来标注一段时间。-Slider control, you can drag the control points to mark the two for some time.