Windows下動態庫的編譯以及調用

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1.MFC下產生動態庫

1>顯式調用

在.cpp檔案裡添加介面函數

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檔案裡標示匯出介面
 1 sum @1; 2 sub @2; 

編譯即可產生動態庫

在.exe裡調用

在標頭檔裡添加

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 here4     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 here4     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 }

然後將相應的.dll和.lib拷貝到相應目錄即可。

2>隱式調用

在標頭檔裡添加

 1 typedef int (*PFUNC)(int,int); 

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

在BOOL CTestDlgDlg::OnInitDialog()裡添加

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"));

其他相應代碼

 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 here13     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下動態庫產生及調用

動態庫標頭檔裡添加

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

.cpp檔案裡添加

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 }

編譯即產生動態庫

調用

在.exe標頭檔裡添加

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

其他相應檔案

 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 here13     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 }

以上代碼通過測試！