libpng用于图片处理，zlib用于压缩。两者密切相关，libpng依赖zlib。对于要用到这两个库的工程，主要需要做三件事：1.projectproperty->Configurationproperties->C/C++/General->AdditionalIncludeDirectories中把包含png.h等头文件的目录加进来2.Linker->Input->AdditionalDependencies中加zlib.lib;libpng.lib(:\libpng\libpng-1.5.28\projects\visualc71\Win32_DLL_Debug\)。3.Configuration