PNG格式图片的读取与保存

PNG格式图片的读取与保存，dll16\zlib16.dll:The16bitsDLLofZLib1.14dll16\zlib16.lib:The16bitsimportlibraryfortheDLLofZLib1.14dll32\zlib.dll:The32bitsDLLofZLib1.14dll32\zlib.lib:The32bitsimportlibraryfortheDLLofZLib1.14static32\zlibstat.lib:The32bitsstatislibraryofzLib1.