showlatin.cpp

测试指定GBK码或者UNICODE码是否存在系统字库中

// ShowLatin.cpp : implementation file
//

#include "stdafx.h"
#include "Test_Font.h"
#include "ShowLatin.h"

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

/////////////////////////////////////////////////////////////////////////////
// CShowLatin dialog

CShowLatin::CShowLatin(CWnd* pParent /*=NULL*/)
	: CDialog(CShowLatin::IDD, pParent)
{
	//{{AFX_DATA_INIT(CShowLatin)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT

    m_pLatin = new char[2048 * 2];
    m_pUnicode = new TCHAR[2048];
    m_nCurr = 0;

    UINT8 LATIN[3][4];
    int i, j, k, index;

    LATIN[0][0] = 0x81;
    LATIN[0][1] = 0x20;
    LATIN[0][2] = 0x91;
    LATIN[0][3] = 0x37;

    LATIN[1][0] = 0xF0;
    LATIN[1][1] = 0x20;
    LATIN[1][2] = 0xF0;
    LATIN[1][3] = 0x29;

//    LATIN[2][0] = 0xF8;
//    LATIN[2][1] = 0xA1;
//    LATIN[2][2] = 0xFE;
//    LATIN[2][3] = 0xFE;


    index = 0;
    for (i=0; i<2; i++)
    {
        for (j=LATIN[i][0]; j<= LATIN[i][2]; j++)
        {
            for (k=LATIN[i][1]; k<= LATIN[i][3]; k++)
            {
                m_pLatin[index++] = j;
                m_pLatin[index++] = k;
            }
        }
    }

    m_pLatin[index] = 0;
    m_nChar = index / 2;

    MultiByteToWideChar(CP_ACP | CP_OEMCP, 0, m_pLatin, index, m_pUnicode, 2048);
/*
    char  cInvalid[2];
    TCHAR tcInValid;

    cInvalid[0] = '?';
    cInvalid[1] = 0;
    MultiByteToWideChar(CP_ACP | CP_OEMCP, 0, cInvalid, 1, &tcInValid, 1);
    
    for (i=0; i<m_nChar; i++)
    {
        if (m_pUnicode[i] == tcInValid)
        {
            memmove(&m_pUnicode[i], &m_pUnicode[i + 1], (m_nChar - i + 1) * 2);
            i--;
            m_nChar--;
        }
    }
*/
}


void CShowLatin::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CShowLatin)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CShowLatin, CDialog)
	//{{AFX_MSG_MAP(CShowLatin)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CShowLatin message handlers

BOOL CShowLatin::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	LOGFONT lf;
    memset(&lf, 0, sizeof(LOGFONT));          // Clear out structure.
    lf.lfHeight = FONT_HEIGHT;                         

    lstrcpy(lf.lfFaceName, _T("Arial"));

    m_font.CreateFontIndirect(&lf);  // Create the font.

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

BOOL CShowLatin::DestroyWindow() 
{
	// TODO: Add your specialized code here and/or call the base class

    if (m_pLatin)
    {
        delete m_pLatin;
        m_pLatin = NULL;
    }

    if (m_pUnicode)
    {
        delete m_pUnicode;
        m_pUnicode = NULL;
    }
	
	return CDialog::DestroyWindow();
}

void CShowLatin::DrawPage(int nIndex)
{
    CClientDC dc(this);
    CFont* def_font = dc.SelectObject(&m_font);
    TCHAR* ptcSpace = _T("                                                                                                                                                                                                    ");
    TCHAR  tcClear[CHAR_IN_LINE * 4 +1];
    TCHAR  tcChar[CHAR_IN_LINE+1];

    memset(tcClear, 0, CHAR_IN_LINE * 8 + 2);
    memcpy(tcClear, ptcSpace, CHAR_IN_LINE * 8);

    for (int j=0; j<LINE_IN_PAGE; j++)
    {
        dc.ExtTextOut(5, 5 + FONT_HEIGHT * j, ETO_OPAQUE, NULL, tcClear, NULL);
    }

    for (int i=0; i<LINE_IN_PAGE; i++)
    {
        if ((nIndex >= m_nChar) || (nIndex < 0))
        {
            break;
        }
        
        memcpy(tcChar, m_pUnicode+nIndex, CHAR_IN_LINE * 2);
        nIndex += CHAR_IN_LINE;
        tcChar[CHAR_IN_LINE] = 0;
   
        dc.ExtTextOut(5, 5 + FONT_HEIGHT * i, ETO_OPAQUE, NULL, tcChar, NULL);
    }
    
    dc.SelectObject(def_font);
}

void CShowLatin::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here

    DrawPage(m_nCurr);
	
	// Do not call CDialog::OnPaint() for painting messages
}