Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 17 - File Objects / File Objects Reference

Data Structures

Unknown Object Data Structures

QuickDraw 3D returns data about unknown text or binary data objects in an unknown text data structure or an unknown binary data structure. An unknown text data structure is defined by the TQ3UnknownTextData data type.

typedef struct TQ3UnknownTextData {
   char                 *objectName;   /*'\0' terminated*/
   char                 *contents;     /*'\0' terminated*/
} TQ3UnknownTextData;

Field Description

objectName

A pointer to the name of the unknown text object. This name is a C string terminated by the null character ('\0').

contents

A pointer to the contents of the unknown text object. This string is a C string terminated by the null character ('\0').

An unknown binary data structure is defined by the TQ3UnknownBinaryData data type.

typedef struct TQ3UnknownBinaryData {
   TQ3ObjectType              objectType;
   unsigned long              size;
   TQ3Endian                  byteOrder;
   char                       *contents;
} TQ3UnknownBinaryData;

Field Description

objectType

The type of the data in the unknown binary object.

size

The size, in bytes, of the data in the unknown binary object.

byteOrder

The order in which the bytes in a word are addressed. This field must contain kQ3EndianBig or kQ3EndianLittle.

contents

A pointer to a copy of the data of the unknown binary object.