iTTable

ITab structure

#include <Quickdraw.h> Color Manager

typedef struct ITab { Size Offset Description

long iTabSeed; 4 0 Copy of color table seed

short iTabRes; 2 4 Table's resolution

unsigned char iTTable[]; n 6

} ITab; 6+n

typedef ITab *ITabPtr;

typedef ITab **ITabHandle;

Notes: The inverse table's size is determined by concatenating the high-order bit

of red, green and blue color components, while its size is calculated on the

basis of the resolution. The number of significant bits per color component

is contained in iResTab and a sample table would look like:

resolution RGB iTab index size

4-bit red = 0x1234

green = 0x5678

blue = 0x9ABC 0x0159 2^12 = 4K bytes

5-bit red = 0x1234

green = 0x5678

blue = 0x9ABC 0x0935 2^15 = 32K bytes

Referenced by (3):