tickit_pen_equiv_attr - test if two pens have an equivalent attribute value

tickit_pen_equiv_attr() tests whether two given pen instances have equivalent values for given attribute.
       It returns true if neither pen has the attribute defined, or if both have it defined to the same value.

       tickit_pen_equiv() tests whether two given pen instances have equivalent values for all attributes.

       tickit_pen_equiv_attr - test if two pens have an equivalent attribute value

tickit_pen_equiv_attr() and tickit_pen_equiv() return a boolean.

tickit_pen_new(3),                tickit_pen_set_bool_attr(3),                tickit_pen_set_int_attr(3),
       tickit_pen_set_colour_attr(3), tickit_pen_clear_attr(3), tickit_pen(7), tickit(7)

                                                                                        TICKIT_PEN_EQUIV_ATTR(3)

#include<tickit.h>booltickit_pen_equiv_attr(TickitPen*a,TickitPen*b,TickitPenAttrattr);booltickit_pen_equiv(TickitPen*a,TickitPen*b)

       Link with -ltickit.