C / C++ / MFC

#include "stdafx.h"
#include "afxdisp.h"
#include "excel.h"

#include "AutoExcel.h"
/////////////////////////////////////////////////////////////////////////////
// The one and only application object

CWinApp theApp;

using namespace std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
	int nRetCode = 0;
	_Application app; 

	// initialize MFC and print and error on failure
	if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
	{
		// TODO: change error code to suit your needs
		cerr <<_T("Fatal Error: MFC initialization failed")<<endl;
		nRetCode = 1;
	}
	if(!AfxOleInit())  
         {
            AfxMessageBox("Could not initialize COM dll");
            return FALSE;
         }
	else
	{
          // Start Excel and get Application object...
         if(!app.CreateDispatch("Excel.Application"))
         {
            AfxMessageBox("Couldn't start Excel.");
         }
         else
         {
            //Make Excel Visible and display a message
          app.SetVisible(TRUE);
          AfxMessageBox ("Excel is Running!");
         }

	}

	return nRetCode;
}