///////////////////////////////////////////////////////////////
//  client.cpp -  client for outproc3 (STA Component)        //
//                                                           //
//  Platform:     Micron Dual Pentium 200, WinNT 4.0, SP3    //
//  Application:  Demonstration for CSE791 - Distrib. Objs   //
//  Authors:      Eddon & Eddon, Inside Distributed COM,     //
//                Microsoft Press, 1998                      //
//  Modified:     Jim Fawcett, Syracuse Univ, CST 2-187      //
//                (315) 443-3948, fawcett@ecs.syr.edu        //
///////////////////////////////////////////////////////////////

#define _WIN32_DCOM
#include <iostream>
#include "Component\component.h"
using namespace std;

void main()
{
  cout << "Client: Calling CoInitialize()" << endl;
  CoInitialize(NULL);
	
  IUnknown* pUnknown;
  IDispatch* pDispatch;
  ISum* pSum;

  cout << "Client: Calling CoCreateInstance() " << endl;
  CoCreateInstance(
                    CLSID_InsideDCOM, 
                    NULL, 
                    CLSCTX_LOCAL_SERVER,
                    IID_IUnknown,
                    (void**)&pUnknown
                  );

  DWORD ID = GetCurrentThreadId();
  cout << "\n  client STA thread ID is " << ID << "\n\n";
  
  cout << "Client: Calling QueryInterface() for ISum on " 
       << pUnknown << endl;
  HRESULT hr = pUnknown->QueryInterface(IID_ISum, (void**)&pSum);

  if(FAILED(hr))
    cout << "QueryInterface FAILED" << endl;

 

  cout << "Client: pSum = " << pSum << endl;

  int sum;
  hr = pSum->Sum(4, 9, &sum);
  if(SUCCEEDED(hr))
    cout << "Client: Calling Sum() return value is " << sum << endl;

  cout << "Client: Calling Release() for pSum" << endl;
  hr = pSum->Release();

  cout << "Client: Calling QueryInterface() for IDispatch on " << pUnknown << endl;
  pUnknown->QueryInterface(IID_IDispatch, (void**)&pDispatch);

  cout << "Client: Calling Release() for pUnknown" << endl;
  hr = pUnknown->Release();

  cout << "Client: Calling GetIDsOfNames" << endl;
  OLECHAR* name = L"Sum";
  DISPID dispid;
  pDispatch->GetIDsOfNames(IID_NULL, &name, 1, GetUserDefaultLCID(), &dispid);
  cout << "GetIDsOfNames(Sum) = " << dispid << endl;
		
  VARIANTARG test[2];
  VariantInit(&test[0]);
  test[0].vt = VT_I4;
  test[0].lVal = 7;
  VariantInit(&test[1]);
  test[1].vt = VT_I4;
  test[1].lVal = 2;
 
  VARIANT result;
  VariantInit(&result);

  DISPPARAMS param = { test, 0, 2, NULL };
  if(FAILED(pDispatch->Invoke(dispid, IID_NULL, GetUserDefaultLCID(), DISPATCH_METHOD, &param, &result, NULL, NULL)))
  	cout << "pDispatch->Invoke() failed" << endl;

  cout << test[0].lVal << " + " << test[1].lVal << " = " << result.lVal << endl;
  pDispatch->Release();

  cout << "Client: Calling CoUninitialize()" << endl;
  CoUninitialize();
}