The cpdf_fill_stroke() function fills the interior of the current path with the current fill color and draws current path. 如果成功则返回 TRUE，失败则返回 FALSE。
See also cpdf_closepath(), cpdf_stroke(), cpdf_fill(), cpdf_setgray_fill(), cpdf_setgray(), cpdf_setrgbcolor_fill() and cpdf_setrgbcolor().