/////////////////////////////////////////////////////////////////
//  CComClient.cpp -  client for component ATLDemo7            //
//                    uses CComQIPtr and CComBSTR              //
//                                                             //
//  Platform:     Dell Dimension 8100, Windows 2000, SP2       //
//  Application:  Demonstration of ATL 7.0 for CSE775          //
//  Modified:     Jim Fawcett, Syracuse Univ, CST 2-187        //
//                (315) 443-3948, fawcett@ecs.syr.edu          //
/////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include <string>
#include <iostream>
#include "..\ATLDemo7.h"
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
  cout << "\n  Testing in-proc component built with ATL 7.0   "
       << "\n    Sending string and getting back modification "
       << "\n ================================================\n" << endl;

  // Initialize COM Library
  CoInitialize(NULL) ;

  wstring prefix = L"\n  Client: \t";
  try
  {
    CComQIPtr<IDemo7> pIDemo7;
    pIDemo7.CoCreateInstance(CLSID_Demo7);
      
      // note: Used as instance, not as smart pointer, e.g.: dot notation

    if(pIDemo7)
    {
      CComBSTR bstr = "Message from CComClient";
      wcout << prefix << L"sending: " << (wchar_t*)bstr;
      HRESULT hr;
      hr = pIDemo7->putString(bstr);
      if(!SUCCEEDED(hr))
        throw "call to putString(BSTR) failed";

      hr = pIDemo7->getString(&bstr);
      if(!SUCCEEDED(hr))
        throw "call to getString(BSTR*) failed";
      wcout << prefix << (wchar_t*)bstr << endl;
    }
    else
    {
      throw "could not create Demo7 instance";
    }
  }
  catch(const char* msg)
  {
    cout << "\n  " << msg << "\n\n";
  }

  // Uninitialize COM Library
  //   Note: If you declare CComQIPtr in the same scope as CoInitialize
  //   and CoUninitialize(), then you must call pIString.Release() before
  //   calling CoUninitialize().  If declared in a nested scope, as here, 
  //   the destructor, ~CComQIPtr() will call release for you, when it 
  //   leaves the inner scope.

  CoUninitialize() ;

  cout << "\n\n";
  return 0 ;
}