MMain函数定义为WinMain函数看port1632.h和pwin32.h文件

编译win2k3的源代码的时候有时候看到MMain函数

..//public/sdk/inc/port1632.h

#if defined(WIN16)
/* ---------------- Maps to windows 3.0 and 3.1 16-bit APIs ----------------*/
#include "ptypes16.h"
#include "pwin16.h"
#include "plan16.h"
/* -------------------------------------------------------------------------*/

#elif defined(WIN32)
/* ---------------- Maps to windows 3.2 and 4.0 32-bit APIs ----------------*/
#include "ptypes32.h"
#include "pcrt32.h"
#include "pwin32.h"
#include "plan32.h"
/* -------------------------------------------------------------------------*/
#else
#error You must define either WIN32 or WIN16
#endif /* WIN32 or WIN16 */
#endif /* ndef _PORT1632_ */
 

MMain函数和port1632.h的关系定义为WinMain函数

..//public/sdk/inc/pwin32.h

#define MMain(hInst, hPrevInst, lpCmdLine, nCmdShow) \
   INT WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpCmdLine, \
   INT nCmdShow) {  \
   INT _argc;       \
   CHAR **_argv;