可以显示截图区域大小,可以任意拖动截图区域,四个边框可拖拽修改大小

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