Windows下动态库的编译以及调用

1.MFC下生成动态库

1>显式调用

在.cpp文件里添加接口函数

1 int sum(int a,int b)
2 {
3     return a + b;
4 }
5 
6 int sub(int a,int b)
7 {
8     return a - b;
9 }

在.def文件里标示导出接口
 1 sum @1; 2 sub @2; 

编译即可生成动态库

在.exe里调用

在头文件里添加

1 #pragma comment(lib,"TestDLL")
2 int sum(int a,int b);
3 int sub(int a,int b);
1 public:
2     void InitAll();
3     CString decToStr(int dec);
4 
5 public:
6     CString str1,str2;
7     int a,b;

Button事件

1 void CTestDlgDlg::OnButtonAdd() 
2 {
3     // TODO: Add your control notification handler code here
4     InitAll();
5     int c = sum(a,b);
6     CString sum1 = decToStr(c);
7     SetDlgItemText(IDC_EDIT3,sum1);
8 }
1 void CTestDlgDlg::OnButtonSub() 
2 {
3     // TODO: Add your control notification handler code here
4     InitAll();
5     int d = sub(a,b);
6     CString Sub = decToStr(d);
7     SetDlgItemText(IDC_EDIT4,Sub);
8 }
 1 void CTestDlgDlg::InitAll()
 2 {
 3     UpdateData(TRUE);
 4     GetDlgItemText(IDC_EDIT1,str1);
 5     GetDlgItemText(IDC_EDIT2,str2);
 6     a = atoi(str1);
 7     b = atoi(str2);
 8 }
 9 
10 CString CTestDlgDlg::decToStr(int dec)
11 {
12     CString str;
13     str.Format(_T("%d"),dec);
14     return str;
15 }

然后将相应的.dll和.lib拷贝到相应目录即可。

2>隐式调用

在头文件里添加

 1 typedef int (*PFUNC)(int,int); 

 1 HMODULE hDllLib; 2 PFUNC m_pSum; 3 PFUNC m_pSub; 

在BOOL CTestDlgDlg::OnInitDialog()里添加

1     hDllLib = LoadLibrary("TestDll.dll");
2     if (hDllLib == NULL)
3     {
4         AfxMessageBox("dll load error");
5         return FALSE;
6     }
7     m_pSum = (PFUNC)(GetProcAddress(hDllLib,"sum"));
8     m_pSub = (PFUNC)(GetProcAddress(hDllLib,"sub"));

其他相应代码

 1 void CTestDlgDlg::OnButtonAdd() 
 2 {
 3     // TODO: Add your control notification handler code here
 4     InitAll();
 5     int c= m_pSum(a,b);
 6     CString sum1 = decToStr(c);
 7     SetDlgItemText(IDC_EDIT3,sum1);
 8 }
 9 
10 void CTestDlgDlg::OnButtonSub() 
11 {
12     // TODO: Add your control notification handler code here
13     InitAll();
14     int d = m_pSub(a,b);
15     CString Sub = decToStr(d);
16     SetDlgItemText(IDC_EDIT4,Sub);
17 }
18 
19 void CTestDlgDlg::InitAll()
20 {
21     UpdateData(TRUE);
22     GetDlgItemText(IDC_EDIT1,str1);
23     GetDlgItemText(IDC_EDIT2,str2);
24     a = atoi(str1);
25     b = atoi(str2);
26 }
27 
28 
29 CString CTestDlgDlg::decToStr(int dec)
30 {
31     CString str;
32     str.Format(_T("%d"),dec);
33     return str;
34 }

 

2.Win32下动态库生成及调用

动态库头文件里添加

1 extern "C" WIN32DLL_API int sum(int a,int b);
2 extern "C" WIN3
2DLL_API int sub(int a,int b);

.cpp文件里添加

1 extern "C" WIN32DLL_API int sum(int a,int b)
2 {
3     return a + b;
4 }
5 
6 extern "C" WIN32DLL_API int sub(int a,int b)
7 {
8     return a - b;
9 }

编译即生成动态库

调用

在.exe头文件里添加

1 #pragma comment(lib,"Win32DLL")
2 
3 extern "C" int sum(int a,int b);
4 extern "C" int sub(int a,int b);

其他相应文件

 1 void CTestDlgDlg::OnButtonAdd() 
 2 {
 3     // TODO: Add your control notification handler code here
 4     InitAll();
 5     int c = sum(a,b);
 6     CString sum1 = decToStr(c);
 7     SetDlgItemText(IDC_EDIT3,sum1);
 8 }
 9 
10 void CTestDlgDlg::OnButtonSub() 
11 {
12     // TODO: Add your control notification handler code here
13     InitAll();
14     int d = sub(a,b);
15     CString Sub = decToStr(d);
16     SetDlgItemText(IDC_EDIT4,Sub);
17 }
18 
19 void CTestDlgDlg::InitAll()
20 {
21     UpdateData(TRUE);
22     GetDlgItemText(IDC_EDIT1,str1);
23     GetDlgItemText(IDC_EDIT2,str2);
24     a = atoi(str1);
25     b = atoi(str2);
26 }
27 
28 
29 CString CTestDlgDlg::decToStr(int dec)
30 {
31     CString str;
32     str.Format(_T("%d"),dec);
33     return str;
34 }

以上代码通过测试！

 

posted @ 2014-08-01 18:37  万载一梦  阅读(799)  评论(0)  编辑  收藏  举报