PNG格式图像解码，包含VC6,VC.NET以及BorlandC++等多种IDE下的工作区设置-PNG image decoding formats, including VC6, VC.NET and Borland C and other work under the IDE set up a

这是一个将24位位图转换为8位位图的算法程序，用 vc++写的内容通俗易懂，注释清晰。-This is a 24-bit bitmap is converted to 8-bit map algorithm, using vc++ to write the content easy to understand, clear notes.