动态链接库的导出与导入实例

1、XXXX大学实验报告成绩第 页（共 页）课程：软件开发技术实验日期 年 月 日专业班号XXXX组别交报告日期 年 月 日姓名XXXXXXXXX学号XXXXXXXXX报告退发（修正、重做）同组者教师审批签字实验报告格式一、预习准备：实验目的和要求，实验仪器和设备等；二、实验过程：实验步骤和实验数据记录；三、实验总结：实验数据处理和实验结果讨论。实验名称动态链接库的导出与导入一、实验目的1动态链接库程序设计；2动态链接库应用程序设计；二、实验内容1 导出DLL动态链接库2 导入DLL动态链接库3 函数寻址三、源码： 导出DLL：/DLL.h#ifdef DLL_EXPORTS#define DLL

2、_API _declspec(dllexport) #else#define DLL_API _declspec(dllimport) #endifstruct StuInfochar num15;/学号char name10;/姓名char sex3;/性别char school20;/学院char major_class10;/专业班级StuInfo *next;/下一个学生信息的地址;extern "C" _declspec(dllexport) void Input_Data ( StuInfo * );/输入数据extern "C" _decl

3、spec(dllexport) StuInfo* Num_Search ( StuInfo * );/用学号搜索extern "C" _declspec(dllexport) void Num_Modify ( StuInfo * );/用学号修改extern "C" _declspec(dllexport) void Num_Delete ( StuInfo * );/用学号删除extern "C" _declspec(dllexport) void Print ( StuInfo *p );/显示学生信息extern "

4、C" _declspec(dllexport) int Menu ( );/菜单函数extern "C" _declspec(dllexport) void Class_Search ( StuInfo *head );/用班级搜索/DLL.c#ifndef DLL_EXPORTS#define DLL_EXPORTS#endif#include"DLL.h"#include <windows.h>#include <stdio.h>#include <tchar.h>#include <malloc.

5、h>#include <string.h>static int stu_num = 0;/初始化学生数量为0BOOL APIENTRY DllMain ( HMODULE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)switch ( ul_reason_for_call )case DLL_PROCESS_ATTACH:case DLL_THREAD_ATTACH:case DLL_THREAD_DETACH:case DLL_PROCESS_DETACH:break;return TRUE;DLL_API void

6、Input_Data ( StuInfo *head )/输入数据StuInfo *new_stu;new_stu = ( StuInfo* ) malloc ( sizeof ( StuInfo ) );/申请新的节点空间printf ( "请输入新的学生信息：n" );printf ( "学号：" );scanf_s ( "%s", new_stu->num, 15 );printf ( "姓名：" );scanf_s ( "%s", new_stu->name, 10 );pr

7、intf ( "性别：" );scanf_s ( "%s", new_stu->sex, 3 );printf ( "学院：" );scanf_s ( "%s", new_stu->school, 20 );printf ( "专业班级：" );scanf_s ( "%s", new_stu->major_class, 10 );/头插法建立链表new_stu->next = head->next;head->next = new_stu;

8、stu_num+;/学生数量加一DLL_API StuInfo* Num_Search ( StuInfo *head )/用学号搜索 返回目标节点的前一个节点StuInfo *p, *p_ahead;/p 和 p的前一个节点char search15;p = head;if ( stu_num = 0 )printf ( "没有学生信息n" );return NULL;printf ( "请输入要查找的学号：" );scanf_s ( "%s", search, 15 );while ( p != NULL )/如果找到了直接退出程

9、序 没找到会退出循环 给出提示if ( strcmp ( p->num, search ) = 0 )/如果两个字符串相等printf ( "学 号 姓 名 性 别 学 院 专业班级n" );Print ( p );/输出该信息return p_ahead;/返回前一个p_ahead = p;/保存前一个节点p = p->next;/查找下一个printf ( "没有该学生信息n" );return NULL;DLL_API void Class_Search ( StuInfo *head )/用班级搜索StuInfo *p;char se

10、arch10;int num = 0, mark = 0;p = head;if ( stu_num = 0 )printf ( "没有学生信息n" );return;printf ( "请输入要查找的专业班级：" );scanf_s ( "%s", search, 10 );while ( p != NULL )/如果找到了直接退出程序 没找到会退出循环 给出提示if ( strcmp ( p->major_class, search ) = 0 )/如果两个字符串相等num+;if ( mark = 0 )printf (

11、"学 号 姓 名 性 别 学 院 专业班级n" );mark = 1;Print ( p );/输出该信息p = p->next;/查找下一个if ( num = 0 )printf ( "没有找到该班级学生信息n" );return;elseprintf ( "共找到该班级%d名学生信息n", num );return;DLL_API void Num_Modify ( StuInfo *head )/用学号修改StuInfo *p, *head1, *p_ahead;head1 = head;p_ahead = Num_Se

12、arch ( head1 );/接收目标节点的前一个节点if ( p_ahead = NULL )return;p = p_ahead->next;/目标节点if ( p_ahead != NULL )printf ( "请重新输入该学生信息：n" );printf ( "输入学号：" );scanf_s ( "%s", p->num, 15 );printf ( "输入姓名：" );scanf_s ( "%s", p->name, 10 );printf ( "输入

13、性别：" );scanf_s ( "%s", p->sex, 3 );printf ( "输入学院：" );scanf_s ( "%s", p->school, 20 );printf ( "输入专业班级：" );scanf_s ( "%s", p->major_class, 10 );printf ( "修改成功n" );return;DLL_API void Num_Delete ( StuInfo *head )/用学号删除StuInfo *

14、p, *p_ahead, *p_after, *head1;head1 = head;p_ahead = Num_Search ( head1 );/接收目标节点的前一个节点if ( p_ahead != NULL )p = p_ahead->next;p_after = p->next;/目标节点的后一个节点p_ahead->next = p_after;/链接这两个节点free ( p );/删除中间的节点printf ( "删除成功n" );return;DLL_API void Print ( StuInfo *p )/显示学生信息printf (

15、 "%s %s %s %s %sn", p->num, p->name, p->sex, p->school, p->major_class );DLL_API int Menu ( )int choose;printf ( " 学生证管理系统 nn" );printf ( " 1.输入数据n" );printf ( " 2.学号查询n" );printf ( " 3.班级查询n" );printf ( " 4.学号修改n" );printf (

16、 " 5.学号删除n" );printf ( " 6.退出系统n" );printf ( "请选择：" );scanf_s ( "%d", &choose, 1 );while ( choose<1 | choose>6 )printf ( "您的选择有误，请重新输入：" );scanf_s ( "%d", &choose, 1 );return choose;将导出的DLL放在导入DLL项目目录下 导入DLL：/DLL_1.h#include &

17、lt;stdio.h>#include <tchar.h>#include<windows.h>#ifdef DLL_EXPORTS#define DLL_API _declspec(dllexport) #else#define DLL_API _declspec(dllimport) #endifstruct StuInfochar num15;/学号char name10;/姓名char sex3;/性别char school20;/学院char major_class10;/专业班级StuInfo *next;/下一个学生信息的地址;/main.h#inc

18、lude"DLL_1.h"typedef void ( *Input_Data ) (StuInfo *);/输入数据typedef StuInfo* (*Num_Search) (StuInfo *);/用学号搜索typedef void ( *Class_Search ) (StuInfo *);/用班级搜索typedef void ( *Num_Modify ) (StuInfo *);/用学号修改typedef void ( *Num_Delete ) (StuInfo *);/用学号删除typedef void ( *Print ) (StuInfo *p);/显

19、示学生信息typedef int ( *Menu ) ();/菜单函数int main ( int argc, char* argv )Input_Data input_data;Num_Search num_search;Class_Search class_search;Num_Modify num_modify;Num_Delete num_delete;Print print;Menu menu;StuInfo *head;/head为头结点 p为尾节点HINSTANCE hinstance;TCHAR path = TEXT ( ".DLL_1.dll" );hi

20、nstance = LoadLibrary ( path );if ( hinstance = NULL )printf ( "dll 未正确加载n" );return 1;print = ( Print ) GetProcAddress ( hinstance, "Print" );menu = ( Menu ) GetProcAddress ( hinstance, "Menu" );input_data = ( Input_Data ) GetProcAddress ( hinstance, "Input_Data" );num_search = ( Num_Search ) GetProcAddress ( hinstance, "Num_Search" );class_search = ( Class_Search ) GetProcAddress ( hinstance, "Class_Sea