用vc++2005开发的一个象autocad那样画polyline,line以及矩形,椭圆的程序,同时可以设置线型,线宽和颜色,操作及其简单,功能异常到位,可供学习者研究和借鉴-vc 2005 with the development of a painting such as autocad Polyline. line and rectangular, oval procedure, and the setting up of linear, width and color, and sim