rgbOpColor
GrafVars structure
#include <Quickdraw.h>
typedef struct GrafVars { Size Description
RGBColor rgbOpColor; n addPin, subPin and blend color ( initialized
black)
RGBColor rgbHiliteColor; n Initialized as default HiliteRGB
Handle pmFgColor; n Foreground color table handle
short pmFGIndex; 4 Initialized at 0
Handle pmBkColor; n Initialized at 0
short pmBkIndex; 4 Initialized at 0
short pmFlags; 4 Initialized at 0
} GrafVar;
typedef GrafVars *GVarPtr;
typedef GrafVars **GVarHandle;

Notes: The portPixMap isn't given a color table of its own. Instead, the handle to
the current device's color table is copied from InitCPort. See
NewCWindow, OpenCPort, and GetNewCWindow.