static FT_UInt get_glyph_index(const GdiFont *font, UINT glyph)
{
    FT_UInt glyphId;

    if(font->ft_face->charmap->encoding == FT_ENCODING_NONE) {
        WCHAR wc = (WCHAR)glyph;
        BOOL default_used;
        BOOL *default_used_pointer;
        FT_UInt ret;
        char buf;
        default_used_pointer = NULL;
        default_used = FALSE;
        if (codepage_sets_default_used(font->codepage))
            default_used_pointer = &default_used;
        if(!WideCharToMultiByte(font->codepage, 0, &wc, 1, &buf, sizeof(buf), NULL, default_used_pointer) || default_used)
        {
            if (font->codepage == CP_SYMBOL && wc < 0x100)
                ret = pFT_Get_Char_Index(font->ft_face, (unsigned char)wc);
            else
                ret = 0;
        }
        else
            ret = pFT_Get_Char_Index(font->ft_face, (unsigned char)buf);
        TRACE("%04x (%02x) -> ret %d def_used %d\n", glyph, (unsigned char)buf, ret, default_used);
        return ret;
    }

    if(font->ft_face->charmap->encoding == FT_ENCODING_MS_SYMBOL)
    {
        if (glyph < 0x100) glyph += 0xf000;
        /* there is a number of old pre-Unicode "broken" TTFs, which
           do have symbols at U+00XX instead of U+f0XX */
        if (!(glyphId = pFT_Get_Char_Index(font->ft_face, glyph)))
            glyphId = pFT_Get_Char_Index(font->ft_face, glyph-0xf000);
    }
    else glyphId = pFT_Get_Char_Index(font->ft_face, glyph);

    return glyphId;
}