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- /* LISTING 7 - CIRCLE.C */
- #include "obj.h"
-
- /* get the color */
- static int circle_getcolor(CIRCLE *pc)
- { return pc->color; }
-
- /* set color */
- static int circle_setcolor(CIRCLE *pc,
- int color)
- { return (pc->color = color); }
-
- /* create an "action package" for CIRCLEs */
- static CIRCLE_ACTIONS cact =
- {circle_setcolor, circle_getcolor};
-
- /* and a "constructor" for a new circle */
- constructor(CIRCLE *pc, int color)
- {
- pc->color = color;
-
- /* constructor can access the private
- action package! */
-
- /* constructor hooks up actions */
- pc->pcact = &cact;
- }
-
-