DLL初试

环境: VC++6.0

步骤:

1.建立一个WIN32 DYNAMIC-LINK LIBRARY工程,编写CPP文件,文件内容例如:

 #include "stdafx.h"
 #include "windows.h"
 #include "dll.h"
 BOOL APIENTRY DllMain( HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved )
 {
     return TRUE;
 }
 extern"C"_declspec(dllexport)int sum(int a, int b) { return a+b; }

2.记得编写头文件,在本次事例中,头文件为dll.h,内容:

extern"C"_declspec(dllexport) int sum(int a,int b);

3.进行编译连接,本过程可能回有点(相当)曲折.编译连接OK,生成*.dll *.lib 这两个文件便可用了.

(静态调用)测试:

创建一个WIN32 CONSOLE APPLICATION,编写CPP代码例如:

 // dllTest.cpp : Defines the entry point for the console application.
 //

 #include "stdafx.h"
 #include <stdio.h>
 extern"C"_declspec(dllexport) int sum(int a,int b);
 #pragma comment (lib,"dll")
 int main(int argc, char* argv[])
 {
     printf("%d\r\n",sum(,));

     return ;
 }

编译连接即可.(记得将*.LIB *.DLL复制到测试的工程目录下)

(动态调用)测试:

 #include "stdafx.h"
 #include <Windows.h>
 #include <stdio.h>

 typedef int(*dllSum)(int,int);
 int main(int argc, char* argv[])
 {
     HMODULE hModule=LoadLibrary("dll.dll");
     dllSum sum=(dllSum)GetProcAddress(hModule,"sum");

     printf("%d\r\n",sum(,));
     return ;
 }