Building an MFC project for a non-Unicode character set is deprecated

1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppBuild.targets(369,5): error MSB8031: Building an MFC project for a non-Unicode character set is deprecated. You must change the project property to Unicode or download an additional library. See http://go.microsoft.com/fwlink/p/?LinkId=286820 for more information.

还有个可能的原因是，这个ＭＦＣ是用老版本的编译器编辑的。编译器改为VS2010编译通过。