Carbon


ITab

Header: Quickdraw.h

struct ITab {
    SInt32 iTabSeed; 
    SInt16 iTabRes; 
    Byte iTTable[1];
};
typedef ITab ITabPtr;

Field descriptions

iTabSeed

The iTabSeed value, initially set from the corresponding CLUT’s ctSeed field. If at any time these do not match, then the color table was changed, and the inverse table needs to be rebuilt.

iTabRes

The resolution of this inverse table.

iTTable

An array of index values. The size of the iTabTable field in bytes is 23*iTabRes.

The ITab data structure contains the inverse table information that the Color Manager uses for fast mapping of RGB color values.


© 2000 Apple Computer, Inc. (Last Updated 6/30/2000)