chapter5_client.cpp

ATL开发指南PDF格式

//
// Chapter5_Client.cpp
//

#include <windows.h>
#include <tchar.h>
#include <iostream.h>

const IID IID_IAdvancedMath 
    = {0x380F79F9,0x4098,0x11D1,{0x88,0x3A,0x44,0x45,0x53,0x54,0x00,0x00}};

const IID IID_IMath 
    = {0x380F79EA,0x4098,0x11D1,{0x88,0x3A,0x44,0x45,0x53,0x54,0x00,0x00}};

// This gets us the Vtable layouts
// For IMath and IAdvancedMath
#include "..\Chapter5_Simple\Chapter5_Simple.h"
#include "..\Chapter5_Aggregate\Chapter5_Aggregate.h"

int main( int argc, char *argv[] )
{
   cout << "Initializing COM" << endl;

   if ( FAILED( CoInitialize( NULL )))
   {
      cout << "Unable to initialize COM" << endl;
      return -1;
   }

   CLSID clsid;
   HRESULT hr;
#define AGGREGATE
#ifdef AGGREGATE
   cout << "Creating aggregate component" << endl;
   hr = CLSIDFromProgID( L"Chapter5.Aggregate.1", &clsid );
#else
   hr = CLSIDFromProgID( L"Chapter5.Containment.1", &clsid );
   cout << "Creating containment component" << endl;
#endif
   if ( FAILED( hr ))
   {
      cout.setf( ios::hex, ios::basefield );
      cout << "Failed to convert Progid. HR = " << hr << endl;
      return -1;
   }

   // Use CoCreateInstance
   IMath* pMath;
   hr = CoCreateInstance( clsid,
                          NULL,
                          CLSCTX_INPROC,
                          IID_IMath,
                          (void**) &pMath );
   if ( FAILED( hr ))
   {
      cout.setf( ios::hex, ios::basefield );
      cout << "Failed to create server instance. HR = " << hr << endl;
      return -1;
   }

   cout << "Instance created" << endl;

   long result;
   pMath->Multiply( 100, 8, &result );
   cout << "100 * 8 is " << result << endl;

   pMath->Subtract( 1000, 333, &result );
   cout << "1000 - 333 is " << result << endl;

   // Try IAdvancedMath, QI through IMath
   IAdvancedMath* pAdvMath = NULL;
   hr = pMath->QueryInterface( IID_IAdvancedMath, (LPVOID*)&pAdvMath );
   if ( FAILED( hr ))
   {
      cout << "QueryInterface() for IAdvancedMath failed" << endl;
      pMath->Release();
      CoUninitialize();
      return -1;
   }

   pAdvMath->Factorial( 10, &result );
   cout << "10! is " << result << endl;

   pAdvMath->Fibonacci( 10, &result );
   cout << "The Fibonacci of 10 is " << result << endl;

   cout << "Releasing IMath interface" << endl;
   pMath->Release();

   cout << "Releasing IAdvancedMath interface" << endl;
   pAdvMath->Release();

   cout << "Shuting down COM" << endl;
   CoUninitialize();

   return 0;
}