Use of some macros

Use of some macros

_ Attribute __

With a certain standard validation function, type, etc., specific can refer to http://www.cnblogs.com/astwish/p/3460618.html

 

_ MSC_VER

Microsoft's pre-compilation control selects the compiler version. Different compilers use different function definitions. You can use this macro to select different versions of the compiler in different periods: ms vc + + 10.0 _ MSC_VER = 1600 ms vc + + 9.0 _ MSC_VER = 1500 ms vc + + 8.0 _ MSC_VER = 1400

 

WIN32_LEAN_AND_MEAN

Prevents the introduction of some header files to accelerate compilation. It is mainly used to reduce the introduction of some header files when introducing windows. h header files.