RrFont *RrFontOpen (const RrInstance *inst, const gchar *name,
gint size, RrFontWeight weight, RrFontSlant slant);
RrFont *RrFontOpenDefault (const RrInstance *inst);
RrFont *RrFontOpen (const RrInstance *inst, const gchar *name,
gint size, RrFontWeight weight, RrFontSlant slant);
RrFont *RrFontOpenDefault (const RrInstance *inst);