错误1：
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
在project-setting-link里找到project options 去掉里面的/subsystem:console
错误2:
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endt...
将工程设置为Using MFC in a static library
错误3:
libcmtd.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
在project-setting-link里找到project options 将里面的/subsystem:console 改为/subsystem:windows
