wTabHandle
#include <Fonts.h>
typedef struct FMetricRec { Size Offset Description Fixed ascent; 4 0 Max distance above baseline (in pixels)
Fixed descent; 4 4 Max distance below baseline (in pixels)
Fixed leading; 4 8 Distance between lines Fixed widMax; 4 12 Maximum width of any character
Notes: The FMetricRec structure is used in calls to FontMetrics, by applications which need fractional-point accuracy in calculating
text-drawing positioning values.