ms-word - RTF 中的嵌入字体

Question

根据 rtf 规范，我们可以使用 \fontemb 和 \fontfile 控制字在 rtf 文件中嵌入字体。有人可以给我一个可行的例子吗？我希望 rtf 文件使用位于单独文件（即 .ttf 文件）中的字体

Answer 1

您应该使用 TTEmbedFont 函数来创建嵌入的字体数据。http://msdn.microsoft.com/en-us/library/windows/desktop/dd145145(v=vs.85).aspx

像这样。

    //WRITEEMBEDPROC
    unsigned long WriteEmbedProc(void *lpvWriteStream, const void *lpvBuffer, const unsigned long cbBuffer)
    {
        BYTE *rgByte = new BYTE[cbBuffer];
        memcpy(rgByte, lpvBuffer, cbBuffer);

        //stream to store your font information
        std::ofstream *ofs = static_cast<std::ofstream*>(lpvWriteStream);

        //convert binary data to hexadeciaml, that rtf uses
        std::string byte_string = BinToHex(rgByte, cbBuffer);

        //Write formated data to your file (stream)
        for (int i = 0; i < byte_string.size(); ++i)
        {   
            *ofs << byte_string[i];
            if((i + 1) % 128 == 0)
            {
                *ofs << "\n";
            }
        }

        delete rgByte;
        return cbBuffer;
    }

   void EmbedFontWrap(HDC hdc)
   {
    ULONG ulPrivStatus = 0;
    ULONG ulStatus = 0;
    std::ofstream *lpvWriteStream = new std::ofstream("D:\\out.txt", std::ios::binary);
    USHORT *pusCharCodeSet;
    USHORT usCharCodeCount;
    USHORT usLanguage;
    LONG ret = TTEmbedFont(
        hdc,
        TTEMBED_RAW | TTEMBED_EMBEDEUDC,
        CHARSET_UNICODE,
        &ulPrivStatus,
        &ulStatus,
        WriteEmbedProc,
        lpvWriteStream,
        nullptr,
        0,
        0,
        nullptr);
    lpvWriteStream->close();
    delete lpvWriteStream;
}

您要嵌入的字体应通过 SelectObject 函数为您的设备上下文设置为当前字体。