编写DLL程序方法(二)

第一步：创建一个动态链接库程序第二步：编写一个测试程序#include "stdafx.h"int add(int a,int b){return a+b;}int sub(int a,int b){return a-b;}BOOL APIENTRY DllMain( HANDLE hModule,                        DWORD  ul_reason_for_call,                        LPVOID lpReserved ){    return TRUE;}第三步：定义一个def文件（比如EXPORTS.def）EXPORTS addsub第四步：直接编译DLL文件第五步：编写测试程序，把编译目录下的xxx.dll 和xxx.lib  拷到你要调用此DLL的程序中    xxx.lib放到工程目录下，xxx.dll放到编译目录下第六步：测试程序例如// testDLL.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <windows.h>typedef int (*addFunction)(int,int);typedef int (*subFunction)(int,int);int main(int argc, char* argv[]){int a=5,b=1,c=0;    addFunction add;    subFunction sub;add=(addFunction)GetProcAddress(LoadLibrary("myDLL.dll"),"add");sub=(addFunction)GetProcAddress(LoadLibrary("myDLL.dll"),"sub");    c=add(a,b);printf("%d\n",c);c=sub(a,b);printf("%d\n",c);return 0;}第七步：直接运行即可