Hi Carl, Thank you for your reply. I'm programming with Cairo and find it's very powerful. Can I use cairo in such a way below to achieve the "slant/bold" effect? 1. Call - FreeType library to load a regular "FT_Face" with no "slant/bold".(I really expeced to load "regular" fonts, then use transformations to achieve the effect of "slant/bold"). 2. Call - cairo_ft_font_face_create_for_ft_font_face() create a "cairo_font_face_t*" 3. Call - cairo_set_font_face() to set the newly created "cairo_font_face_t*" into current "cairo_t*" 4. Call - cairo_select_font_face(cairo_t*, FT_Face.family_name, SLANT flag,WEIGHT flag). Because cairo doesn't provide the enumeration of the font-family names it supports. So I get the font-family name from FT_Face in FreeType library. Is this a correct way? I'm thinking it's not, but the renderring effect is not so bad. Simply speaking, could "cairo_set_font_face()" and "cairo_select_font_face()" APIs be used together? Are they conflicted with each other? I'm really a new-comer to open source project, so I may raise some silly problems. If that happened, please excuse for my ignorance. Regards, Clark 在2008-06-06，"Carl Worth" <cworth@cworth.org> 写道： >On Thu, 5 Jun 2008 16:09:29 +0800 (CST), zjuclarkm wrote: >> I want to use Cairo with FreeType font backend on Windows. But I >> find one question: if I have opened a FT_Face and created a >> corresponding cairo_font_face_t*, set it to cairo by calling >> cairo_set_font_face(), how can I get the effect of "slant/oblique" >> and "bold" text just as I simply calling the "toy" api of >> cairo_select_font_face()? > >Hi Clark, > >For this, you should open an FT_Face that has the slant and weight >that you want. Many fonts provide separate faces for these. For those >that don't, I believe that freetype provides flags you can use to get >artificial emboldening, etc. But I'm definitely talking about features >here that I don't actually know how to use myself. So I trust that >Behdad or someone else will step forward to correct any misinformation >I'm spreading. > >> Moreover, does anyone know the efficiency of FreeType on Windows >> platform compared to native WINDOWS api for font? > >I don't know anything about this performance comparison myself. > >One reason application authors prefer to use cairo with the native >font system, (on any platform), is to provide a consistent experience, >(available fonts, details of font rendering, etc.), with other >applications on that platform. > >Have fun with cairo! > >-Carl  <hr> <a style="font-size:12px;line-height:15px; color:blue; text-decoration:underline;" href="http://popme.163.com/link/004062_0602_706.html">两两来Win为中国</a>