Something

#define FULL_SIZE_BORDER_BUTTON(TYPE) \
group { \
   name:  "e/widgets/border/default/"TYPE; \
   parts { \
      part { \
	 name:           "whole"; \
	 type:           RECT; \
	 description { \
	    state: "default" 0.0; \
	    visible: 0; \
	    rel1 { \
	       relative: 0.0 0.0; \
	       offset:   0   0; \
	    } \
	    rel2 { \
	       relative: 1.0 1.0; \
	       offset:   -1  -1; \
	    } \
	 } \
      } \
      BORDER_BUTTON("button",TYPE,0.0,0.0,-3,-3,"whole",1.0,1.0,2,2,"whole") \
   } \
}