DDA算法画直线,虽然比较简单,但是我个人的第一个图形学程序,希望大家提出批评.-DDA algorithm painting line, although relatively simple, but personally I of a graphics procedures in the hope that we criticize.

VC++的上位机通信程序。并带有图形界面，此程序是一个完整的工程可以直接使用，如果用于商业请先联系本人。-VC++ host computer communication program. With a graphical interface, this program is a complete project can be used directly for commercial please contact me first.