nxtComp
CProcRec structure
#include <Quickdraw.h>
typedef struct CProcRec { Size Offset Description
CProcHandle nxtComp; 4 0 Handle to next CProcRec
ColorComplementProcPtr compProc; 4 4 Points to search procedure
} CProcRec; ‹8
typedef CProcRec *CProcPtr;
typedef CProcRec **CProcHndl;

Notes: Applications can all have their own custom search procedures to find the
complement of a specified color, yet share the same gDevice. The search
procedures form the elements in a linked list that starts in the device port's
gdCompProc field. The complement search procedures work the same way
as the standard search procedures defined in the SProcRec record
type--except that they use the 1's complement of RGB components before
searching through the inverse table.