vc中自定义编译时的输出消息

1 // put the following code in header file or at the beginning of the source file.
2 #define __STR2__(x) #x
3 #define __STR1__(x) __STR2__(x)
4 #define __LOC__ __FILE__ "("__STR1__(__LINE__)") : Warning Msg: "
5 
6 // output the user-define information in the source file.
7 #pragma message(__LOC__"自定义消息")