プリンタ名の列挙

    // プリンタ名の列挙

    static HRESULT EnumPrinterNames(std::vector<CString>& strPrinterNames)

    {

        strPrinterNames.clear();

        OSVERSIONINFO version;

        memset(&version, 0, sizeof(version));

        version.dwOSVersionInfoSize = sizeof(version);

        ::GetVersionEx(&version);

        if (version.dwPlatformId == VER_PLATFORM_WIN32_NT)

        {

            BYTE buffer[1024 * 64];

            DWORD dwNeeded = 0;

            DWORD dwReturned = 0;

            BOOL br = ::EnumPrinters(

                PRINTER_ENUM_CONNECTIONS | PRINTER_ENUM_LOCAL,

                0,

                4,

                buffer,

                10240,

                &dwNeeded,

                &dwReturned);

            if (br == 0)

            {

                DWORD dwError = ::GetLastError();

                return HRESULT_FROM_WIN32(dwError);

            }

            BYTE* p = buffer;

            for (DWORD i = 1; i <= dwReturned; i++)

            {

                PRINTER_INFO_4* pPI4 = (PRINTER_INFO_4*)p;

                CString strPrinterName = (LPCSTR)pPI4->pPrinterName;

                TRACE(_T("%s\n"), (LPCSTR)strPrinterName);

                strPrinterNames.push_back(strPrinterName);

                p += sizeof(PRINTER_INFO_4);

            }

        }

        else if(version.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)

        {

            BYTE buffer[1024 * 64];

            DWORD dwNeeded = 0;

            DWORD dwReturned = 0;

            BOOL br = ::EnumPrinters(

                PRINTER_ENUM_LOCAL,

                0,

                2,                                    // level

                buffer,

                10240,

                &dwNeeded,

                &dwReturned);

            if (br == 0)

            {

                DWORD dwError = ::GetLastError();

                return HRESULT_FROM_WIN32(dwError);

            }

            BYTE* p = buffer;

            for (DWORD i = 1; i <= dwReturned; i++)

            {

                PRINTER_INFO_2* pPI2 = (PRINTER_INFO_2*)p;

                CString strPrinterName = (LPCSTR)pPI2->pPrinterName;

                TRACE(_T("%s\n"), (LPCSTR)strPrinterName);

                strPrinterNames.push_back(strPrinterName);

                p += sizeof(PRINTER_INFO_2);

            }

        }

        return S_OK;

    }