学习MFC中tree button控件使用，对于初学者有所帮助，调试编译可通过-MFC tree button study，can debug with VS2008,VS2010,VS2012,VS2013

mfctree control类的封装，有加载位图的功能，方便这方面需求的下载，编译环境vs2010-mfc tree control class package, there are loaded bitmap function to facilitate this need to download, compile environment vs2010