/* Replace "dll.h" with the name of your header */
#include "dll.h"
#include <windows.h>
#include<stdio.h>

DllClass::DllClass()
{

}


DllClass::~DllClass ()
{

}


BOOL APIENTRY DllMain (HINSTANCE hInst /* Library instance handle. */ ,
DWORD reason /* Reason this function is being called. */ ,
LPVOID reserved /* Not used. */ )
{
switch (reason)
{
case DLL_PROCESS_ATTACH: printf("DLL_PROCESS_ATTACH\n");
break;

case DLL_PROCESS_DETACH:printf("DLL_PROCESS_DETACH\n");
break;

case DLL_THREAD_ATTACH:printf("DLL_THREAD_ATTACH\n");
break;

case DLL_THREAD_DETACH:printf("DLL_THREAD_DETACH\n");
break;
}

/* Returns TRUE on success, FALSE on failure */
return TRUE;
}
书本上一个参考程序如上，这个函数的函数类型是BOOL APIENTRY，函数名DllMain还是
函数类型是BOOL ，函数名APIENTRY DllMain？

#define CALLBACK __stdcall

#define WINAPI __stdcall

#define APIPRIVATE __stdcall

#define PASCAL __stdcall
怎么上面这么多种类同时赋值 __stdcall 了？这就是说
CALLBACK ，WINAPI ，APIPRIVATE，PASCAL 的调用方式没有区别了 ？