RPN Dynamic Registration Model

// RPNSampleDlg.cpp : implementation file
//

#include "stdafx.h"
#include "RPNSample.h"
#include "RPNSampleDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CRPNSampleDlg dialog

CRPNSampleDlg::CRPNSampleDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CRPNSampleDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRPNSampleDlg)
	m_strKey = _T("");
	m_strPPCId = _T("Sample");
	m_strRPN = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CRPNSampleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRPNSampleDlg)
	DDX_Text(pDX, IDC_KEY, m_strKey);
	DDX_Text(pDX, IDC_PPC_ID, m_strPPCId);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRPNSampleDlg, CDialog)
	//{{AFX_MSG_MAP(CRPNSampleDlg)
	ON_BN_CLICKED(IDC_REGISTER_BUTTON, OnRegisterButton)
	ON_EN_CHANGE(IDC_PPC_ID, OnChangePpcId)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRPNSampleDlg message handlers

BOOL CRPNSampleDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	
	return TRUE;  // return TRUE  unless you set the focus to a control
}



void CRPNSampleDlg::OnRegisterButton() 
{
UpdateData();
CString RegisterString;
RegisterString.Format(_T("%-.5d"),(int)(EvaluateRPN(m_strPPCId,111)));
if(	RegisterString.Find(m_strKey)==0)
{
	AfxMessageBox(_T("REGISTRATION CODE OK"));
}
else
{
	AfxMessageBox(_T("REGISTRATION FAILED"));

}
}



double CRPNSampleDlg::EvaluateRPN(CString RPN,double m_nVariant) 
{

	CString m_strRPN;
	double  m_nStringValue=0;
	int     StringPos=0;

	if(RPN.GetLength()>10)
	{
			m_strRPN=RPN.Left(5) + RPN.Right(5);
	}
	else m_strRPN=RPN;


	do
	{
		m_nStringValue += (double)m_strRPN.GetAt(StringPos);
		StringPos++;

	}while(StringPos <= m_strRPN.GetLength());


	m_nStringValue=m_nStringValue*5;  // c5*

	m_nStringValue+=m_nVariant;


	//  RPN = "i 0 == m_nVariant * key + c 5 * +" 


	return m_nStringValue;

}

void CRPNSampleDlg::OnChangePpcId() 
{
UpdateData();
m_strRPN.Format(_T("%-.5d"),(int)(EvaluateRPN(m_strPPCId,111)));
SetDlgItemText(IDC_RPN,m_strRPN);

}