A Spell Checking Engine

// FPSSpellCheckerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "FPSSpellChecker.h"
#include "FPSSpellCheckerDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFPSSpellCheckerDlg dialog

CFPSSpellCheckerDlg::CFPSSpellCheckerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CFPSSpellCheckerDlg::IDD, pParent)
{
	m_bReady = FALSE;

	//{{AFX_DATA_INIT(CFPSSpellCheckerDlg)
	m_strWordToFind = _T("");
	m_strWordCount = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CFPSSpellCheckerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFPSSpellCheckerDlg)
	DDX_Control(pDX, IDC_POSSIBLE_MATCHES, m_lstPossibleMatches);
	DDX_Text(pDX, IDC_WORD_TO_FIND, m_strWordToFind);
	DDX_Text(pDX, IDC_WORD_COUNT, m_strWordCount);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CFPSSpellCheckerDlg, CDialog)
	//{{AFX_MSG_MAP(CFPSSpellCheckerDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_SEARCH, OnSearch)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFPSSpellCheckerDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 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
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CFPSSpellCheckerDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CFPSSpellCheckerDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CFPSSpellCheckerDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CFPSSpellCheckerDlg::OnSearch() 
{
	CStringList Matches;

	UpdateData();

	if (!m_bReady)
		InitEngine();

	m_lstPossibleMatches.ResetContent();

	m_Engine.FindWord(m_strWordToFind, Matches);
	//m_Engine.FindMatchingWords(m_strWordToFind, Matches);
	
	POSITION Pos;
	CString strWord;

	Pos = Matches.GetHeadPosition();
	while (Pos)
	{
		strWord = Matches.GetNext(Pos);
		m_lstPossibleMatches.AddString(strWord);
	}
}

void CFPSSpellCheckerDlg::InitEngine()
{
	CString strMain;
	CString strUser;
	CString strCommon;
	CString strWords;
	char szAppPath[2000];
	char szDrive[200];
	char szDir[200];
	char szFile[200];
	char szExt[200];
	char szTemp[20];

	::GetModuleFileName(AfxGetInstanceHandle(), szAppPath, 2000);
	_splitpath(szAppPath, szDrive, szDir, szFile, szExt);

	strMain = szDrive; strMain += szDir; strMain += "USMain.dic";
	strUser = szDrive; strUser += szDir; strUser += "USUser.dic";
	strCommon = szDrive; strCommon += szDir; strCommon += "USCommon.dic";
	strWords = szDrive; strWords += szDir; strWords += "WORDS.DAT";

	//m_Engine.BuildMainDIC(strWords, strMain);
	m_Engine.SetDictionaries(strMain, strUser, strCommon);
	m_Engine.InitEngine();

	long lCount = m_Engine.GetRecordCount();
	_itoa(lCount, szTemp, 10);
	m_strWordCount = szTemp;
	UpdateData(FALSE);

	m_bReady = TRUE;
}