#pragma的几种常见用法 你会使用几个？

 

1) once
#pragma once

2) message
#pragma message("Compiling " __FILE__)

3) pack
#pragma pack(push, N)  N=1,2,4,8,16
// code here
#pragma pack(pop)

4) warning
#pragma warning(disable : 4507 34)
#pragma warning(once : 4385)
#pragma warning(error : 164)

#pragma warning(disable : 4507 34; once : 4385; error : 164) 

#pragma warning(disable : 4705)
// code here
#pragma warning(default : 4705)

#pragma warning(push)
#pragma warning(disable : 4705)
#pragma warning(disable : 4706)
#pragma warning(disable : 4707)
// code here
#pragma warning(pop)

5) comment
#pragma comment(compiler)

#pragma comment(user, "Compiled on " __DATE__ " at " __TIME__)

#pragma comment(lib, "winmm.lib")

#ifdef _DEBUG
#pragma comment(lib, "fooD.lib")
#else
#pragma comment(lib, "foo.lib")
#endif

#pragma comment(exestr, "copyright (c) by SOMEONE")

#pragma comment(linker, "/SUBSYSTEM:WINDOWS")
#pragma comment(linker, "/NODEFAULTLIB:libc.lib")
#pragma comment(linker, "/NOENTRY")
#pragma comment(linker, "/OUT:filename")

http://blog.donews.com/honsan/archive/2005/06/13/427811.aspx