int w32font_text_extents (struct font *font, unsigned *code, int nglyphs,
struct font_metrics *metrics);
int w32font_draw (struct glyph_string *s, int from, int to,
int w32font_text_extents (struct font *font, unsigned *code, int nglyphs,
struct font_metrics *metrics);
int w32font_draw (struct glyph_string *s, int from, int to,