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;
}
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;
}