int main(int argc, char* argv[]) { IMath *pMath = GetInterface( ); int sum = 0; pMath->Add( 3, 2, &sum ); int sub = 0; pMath->Sub( 3, 2, &sub ); printf( "sum=%d, sub=%d\n", sum, sub ); IMath2 *pMath2 = NULL; pMath->QueryInterface( IID_IMath2, (LPVOID*)&pMath2 ); pMath->Release( ); int mul = 0; pMath2->Mul( 3, 2, &mul ); int div = 0; pMath2->Div( 100, 2, &div ); printf( "mul=%d, div=%d\n", mul, div ); pMath->Release( ); return 0; }
int main() { cout << "init com \n"; if(FAILED(CoInitialize(NULL))) { cout << "init failed\n"; } CLSID clsid; HRESULT hr = ::CLSIDFromProgID(L"Chapter2.Math.1", &clsid); if(FAILED(hr)) { cout << "get CLISI from ProgId failed \n"; } IClassFactory* pcf = NULL; hr = CoGetClassObject( clsid, CLSCTX_INPROC, NULL, IID_IClassFactory, (void**)&pcf); if(FAILED(hr)) { cout << "get IClass Factory failed \n"; } IUnknown* pUnk = NULL; hr = pcf->CreateInstance(NULL, IID_IUnknown, (void**)&pUnk); pcf->Release(); if(FAILED(hr)) { cout << "get Iunkdown failed \n"; } IMath* pMath = NULL; hr = pUnk->QueryInterface(IID_IMath, (void**)&pMath); pUnk->Release(); if(FAILED(hr)) { cout <<"get Imath failed \n"; } long op = 1; long op2 = 3; long res = 0; pMath->Add(op, op2, res); cout << "Imath add : res = " << res << " \n"; pMath->Subtract(op, op2, res); cout << "Imath subtract : res = " << res << " \n"; system("pause"); }
int main( int argc, char *argv[] ) { printf( "Initializing COM \n"); if ( FAILED( CoInitialize( NULL ))) { printf( "Unable to initialize COM \n"); return -1; } char* szProgID = "Math.Component.1"; WCHAR szWideProgID[128]; CLSID clsid; long lLen = MultiByteToWideChar( CP_ACP, 0, szProgID,strlen( szProgID ), szWideProgID, sizeof( szWideProgID ) ); szWideProgID[ lLen ] = '\0'; HRESULT hr = ::CLSIDFromProgID( szWideProgID, &clsid ); if ( FAILED( hr )) { printf("Unable to get CLSID from ProgID. HR = %X \n",hr); return -1; } IClassFactory* pCF; // Получить фабрику класса для CMath hr = CoGetClassObject( clsid, CLSCTX_INPROC, NULL,IID_IClassFactory, (void**) &pCF ); if ( FAILED( hr )) { printf("Failed to GetClassObject server instance. HR = %X \n",hr); return -1; } // с помощью фабрики класса создать экземпляр // компонента и получить интерфейс IUnknown. IUnknown* pUnk; hr = pCF->CreateInstance( NULL, IID_IUnknown, (void**) &pUnk ); // Release the class factory pCF->Release(); if ( FAILED( hr )) { printf("Failed to create server instance. HR =%X \n",hr); return -1; } printf("Instance created \n"); IMath* pMath = NULL; hr = pUnk->QueryInterface( IID_IMath, (LPVOID*)&pMath ); pUnk->Release(); if ( FAILED( hr )) { printf("QueryInterface() for IMath failed \n"); return -1; } long result; pMath->Add(255,125,&result); printf("Func - Add: 255 + 125 is %d \n",result); pMath->Multiply( 30, 8, &result ); printf("Func - Mltiply: 30 * 8 is %d \n",result); pMath->Subtract( 200, 123, &result ); printf("Func - Substract: 200 - 123 is %d \n",result); pMath->Divide(21,3,&result); printf("Func - Divide: 21 / 3 is %d \n",result); printf("Releasing instance \n"); pMath->Release(); printf("Shuting down COM\n"); CoUninitialize(); _getch(); return 0; }
IMath *CreateInstance( ) { IMath *pMath = new CImpMath; pMath->AddRef( ); return pMath; }
int main( int argc, char *argv[] ) { cout << "Initializing COM" << endl; if ( FAILED( CoInitialize( NULL ))) { cout << "Unable to initialize COM" << endl; return -1; } char* szProgID = "Math.Component.1"; WCHAR szWideProgID[128]; CLSID clsid; long lLen = MultiByteToWideChar( CP_ACP, 0, szProgID, strlen( szProgID ), szWideProgID, sizeof( szWideProgID ) ); szWideProgID[ lLen ] = '\0'; HRESULT hr = ::CLSIDFromProgID( szWideProgID, &clsid ); if ( FAILED( hr )) { cout.setf( ios::hex, ios::basefield ); cout << "Unable to get CLSID from ProgID. HR = " << hr << endl; return -1; } IClassFactory* pCF; // Get the class factory for the Math class hr = CoGetClassObject( clsid, CLSCTX_INPROC, NULL, IID_IClassFactory, (void**) &pCF ); if ( FAILED( hr )) { cout.setf( ios::hex, ios::basefield ); cout << "Failed to GetClassObject server instance. HR = " << hr << endl; return -1; } // using the class factory interface create an instance of the // component and return the IExpression interface. IUnknown* pUnk; hr = pCF->CreateInstance( NULL, IID_IUnknown, (void**) &pUnk ); // Release the class factory pCF->Release(); if ( FAILED( hr )) { cout.setf( ios::hex, ios::basefield ); cout << "Failed to create server instance. HR = " << hr << endl; return -1; } cout << "Instance created" << endl; IMath* pMath = NULL; hr = pUnk->QueryInterface( IID_IMath, (LPVOID*)&pMath ); pUnk->Release(); if ( FAILED( hr )) { cout << "QueryInterface() for IMath failed" << endl; return -1; } long result; pMath->Multiply( 100, 8, &result ); cout << "100 * 8 is " << result << endl; pMath->Subtract( 1000, 333, &result ); cout << "1000 - 333 is " << result << endl; cout << "Releasing instance" << endl; pMath->Release(); cout << "Shuting down COM" << endl; CoUninitialize(); scanf(""); return 0; }