基于海康威视ＤＶＲ的远程回放，远程访问，远程控制，远程录像，上电视墙等功能,This source is the field of video surveillance PTZ parameters set through the serial port VC++ Realize

用VC把BMP格式的文件转换成JPG格式的文件 完全可以运行-Using VC to BMP file format converted to JPG format in the documents can run

libpng源码，最新的libpng,包含zlib，主要用于png格式的解析。其中包含VC的工程，可以直接编译出lib和d-libpng source, the latest of libpng, including zlib, mainly used png format parsing. Which contains the VC project, you can directly compile the lib and dll