BMP的水印技术,你可以吧文字写到图片里,然后可以提取出来

======================================================================== CONSOLE APPLICATION : TestExtract ======================================================================== AppWizard has created this TestExtract application for you. This file contains a summary of what you will find in each of the files that make up your TestExtract application. TestExtract.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. TestExtract.cpp This is the main application source file. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named TestExtract.pch and a precompiled types file named StdAfx.obj. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. /////////////////////////////////////////////////////////////////////////////