外字の登録と解除 (CEudcHelper, CEudcHolder) [ATL]

#pragma once

// WAC.com Class Liblary for Visual C++

// Copyright (C) WAC.com Inc. All rights reserved.

//

// This file is a part of the WAC.com Class Liblary.

// The use and distribution terms for this software are covered by the

// Common Public License 1.0 (http://opensource.org/licenses/cpl.php)

// which can be found in the file CPL.TXT at the root of this distribution.

// By using this software in any fashion, you are agreeing to be bound by

// the terms of this license. You must not remove this notice, or

// any other, from this software.

// '06.08.14 : UNICODEビルド対応 (sha)

// '07.04.11 : 全面的に改定 (sha)

#include <atlbase.h>                            // CRegKey

#include "Module.h"

/////////////////////////////////////////////////////////////////////////////

// CEudcHelper

//

// SDK32:外字ファイルを更新する方法

// http://support.microsoft.com/kb/413278/ja

class CEudcHelper

{

protected:

    typedef CEudcHelper                            thisClass;

protected:

    CEudcHelper();                                // 実装しない。。

    virtual ~CEudcHelper();

public:

    static BOOL Probe_EnableEUDC(BOOL fEnableEUDC)

    {

        CModule module;

        HINSTANCE hInst = module.LoadLibrary(_T("gdi32.dll"));

        if (hInst == NULL)

        {

            return FALSE;

        }

        typedef BOOL WINAPI FUNC_GDI32_ENABLEEUDC(BOOL fEnableEUDC);

        FUNC_GDI32_ENABLEEUDC* func = (FUNC_GDI32_ENABLEEUDC*)module.GetProcAddress(_T("EnableEUDC"));

        if (func == NULL)

        {

            return FALSE;

        }

        return (*func)(fEnableEUDC);

    }

public:

    static HRESULT RegsterEUDC(LPCTSTR szFontFace, LPCTSTR szFileName, int nCodePage = 932)

    {

        // 一時的に、無効化＆有効化

        CApplyEUDC apply;

        CRegKey regKey;

        CString strRegSubKey = thisClass::GetRegSubKey(nCodePage);

        LONG lResult = regKey.Create(HKEY_CURRENT_USER, strRegSubKey);

        if (lResult != ERROR_SUCCESS)

        {

            DWORD dwError = ::GetLastError();

            return HRESULT_FROM_WIN32(dwError);

        }

        lResult = regKey.SetStringValue(szFontFace, szFileName);

        if (lResult != ERROR_SUCCESS)

        {

            DWORD dwError = ::GetLastError();

            return HRESULT_FROM_WIN32(dwError);

        }

        return S_OK;

    }

    static HRESULT UnregsterEUDC(LPCTSTR szFontFace, int nCodePage = 932)

    {

        // 一時的に、無効化＆有効化

        CApplyEUDC apply;

        CRegKey regKey;

        CString strRegSubKey = thisClass::GetRegSubKey(nCodePage);

        LONG lResult = regKey.Create(HKEY_CURRENT_USER, strRegSubKey);

        if (lResult != ERROR_SUCCESS)

        {

            DWORD dwError = ::GetLastError();

            return HRESULT_FROM_WIN32(dwError);

        }

        lResult = regKey.DeleteValue(szFontFace);

        if (lResult != ERROR_SUCCESS)

        {

            DWORD dwError = ::GetLastError();

            return HRESULT_FROM_WIN32(dwError);

        }

        return S_OK;

    }

protected:

    static CString GetRegSubKey(int nCodePage)

    {

        CString strResult;

        strResult.Format(_T("EUDC\\%d"), nCodePage);

        return strResult;

    }

    class CApplyEUDC

    {

    public:

        CApplyEUDC()

        {

            BOOL br = CEudcHelper::Probe_EnableEUDC(FALSE);

            if (!br)

            {

                // 無視する。。

            }

        }

        virtual ~CApplyEUDC()

        {

            BOOL br = CEudcHelper::Probe_EnableEUDC(TRUE);

            if (!br)

            {

                // 無視する。。

            }

        }

    };

};

/////////////////////////////////////////////////////////////////////////////

// CEudcHolder

class CEudcHolder  

{

protected:

    typedef CEudcHolder                            thisClass;

public:

    CEudcHolder()

    {

        m_nCodePage = -1;

    }

    CEudcHolder(LPCTSTR szFontFace, LPCTSTR szFileName, UINT nCodePage = 932)

    {

        HRESULT hr = S_OK;

        m_nCodePage = -1;

        hr = this->Register(szFontFace, szFileName, nCodePage);

        if (FAILED(hr))

        {

            // 無視する。。

        }

    }

    virtual ~CEudcHolder()

    {

        HRESULT hr = S_OK;

        if (m_nCodePage != -1)

        {

            hr = this->Unregister();

            if (FAILED(hr))

            {

                // 無視する。。

            }

        }

    }

public:

    HRESULT Register(LPCTSTR szFontFace, LPCTSTR szFileName, UINT nCodePage = 932)

    {

        ATLASSERT(m_nCodePage == -1);

        ATLASSERT(nCodePage != -1);

        HRESULT hr = S_OK;

        hr = CEudcHelper::RegsterEUDC(szFontFace, szFileName, nCodePage);

        if (FAILED(hr))

        {

            // 無視する。。

        }

        m_strFontFace = szFontFace;

        m_strFileName = szFileName;

        m_nCodePage = nCodePage;

        return hr;

    }

    HRESULT Unregister()

    {

        ATLASSERT(m_nCodePage != -1);

        HRESULT hr = S_OK;

        hr = CEudcHelper::UnregsterEUDC(m_strFontFace, m_nCodePage);

        if (FAILED(hr))

        {

            // 無視する。。

        }

        m_strFontFace = _T("");

        m_strFileName = _T("");

        m_nCodePage = -1;

        return hr;

    }

protected:

    CString m_strFontFace;

    CString m_strFileName;

    UINT m_nCodePage;

};