vc+ArcEngine建立框架程序:制作浮动可变大小的控制窗口，可以实现图层拖放,vc+ ArcEngine procedures for the establishment of the framework: the production of a floating variable to control the size of the window, you can drag and drop layers to achieve

自制地图浏览控件，可拖拽缩放测距离测角度(Self - made map view control, can drag and drop the zoom Angle.)