一、_stdcall
被这个关键字修饰的函数，其参数都是从右向左通过堆栈传递的(__fastcall 的前面部分由ecx,edx传)， 函数调用在返回前要由被调用者清理堆栈。
这个关键字主要见于Microsoft Visual C、C++。GNU的C、C++是另外一种修饰方式：__attribute__((stdcall))
1.
MathFunsStd.cpp:
int _stdcall add(int a, int b)
{
return a+b;
} int _stdcall subtract(int a, int b)
{
return a-b;
} int _stdcall multiple(int a, int b)
{
return a*b;
}
MathFunsStd.def:
LIBRARY MathFunsStd EXPORTS
add
subtract
multiple
2.MathFuns.cpp
int add(int a, int b)
{
return a+b;
} int subtract(int a, int b)
{
return a-b;
} int multiple(int a, int b)
{
return a*b;
}
MathFuns.def
LIBRARY MathFuns EXPORTS
add
subtract
multiple
3.UseHeaderAPI
MathFunsUseHeader.h
#ifdef MathFunsUseHeaderAPI
#else
#define MathFunsUseHeaderAPI _declspec(dllimport)
#endif MathFunsUseHeaderAPI int add(int a,int b);
MathFunsUseHeaderAPI int subtract(int a,int b);
MathFunsUseHeaderAPI int multiple(int a, int b); #define MathFunsUseHeaderAPI _declspec(dllexport)
#include "MathFunsUseHeader.h"
MathFunsUseHeader.cpp
int add(int a, int b)
{
return a+b;
} int subtract(int a, int b)
{
return a-b;
} int multiple(int a, int b)
{
return a*b;
}
三、调用
/*加载dll函数调用方式为默认调用方式*/
HINSTANCE hInst = LoadLibrary(L"MathFuns.dll");
if(!hInst)
{
printf("加载MathFuns.dll失败!\n");
}
typedef int (*MathFunsAPI)(int a, int b);//定义函数指针变量类型
MathFunsAPI Add = (MathFunsAPI)::GetProcAddress(hInst,"add");
printf("5+3=%d\n",Add(,));
::FreeLibrary(hInst); //调用dll函数调用方式为_stdcall
HINSTANCE hInstStd = ::LoadLibrary(L"MathFunsStd.dll");
if(!hInstStd)
{
printf("加载MathFunsStd.dll失败!\n");
}
typedef int (_stdcall *MathFunsStdAPI)(int a, int b);//定义函数指针变量类型
MathFunsStdAPI AddStd = (MathFunsStdAPI)::GetProcAddress(hInstStd,"add");
printf("5+3=%d\n",AddStd(,));
::FreeLibrary(hInst); return ;