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Data Structures and Constants

Pathnames may be of any length, but components of a pathname are limited as follows:



 
enum

{

    kRegCStrMaxEntryNameLength              = 31

    kRegMaximumPropertyNameLength           = 31

};



 
typedef char         RegCStrPathName;



 
typedef unsigned long

                     RegPathNameSize;



 
typedef char         RegCStrEntryName,

                     *RegCStrEntryNamePtr

                     RegCStrEntryNameBuf[kRegCStrMaxEntryNameLength];



 
typedef char         RegPropertyName,

                     *RegPropertyNamePtr

                     RegPropertyNameBuf[kRegMaximumPropertyNameLength];



 
struct RegEntryID {

    UInt8       opaque[16];

};



 
typedef struct RegEntryID RegEntryID, *RegEntryIDPtr;

Software must use directed moves when examining a neighborhood in the Registry's name tree. The following constants indicate the direction of movement during traversals of the hierarchical Registry tree:



 
typedef unsigned long

                     RegIterationOp;



 
typedef RegIterationOp

                     RegEntryIterationOp;



 
enum

{

    kRegIterRoot                = 0x2L, // absolute locations

    kRegIterParents             = 0x3L, // include all parent(s) of entry

    kRegIterChildren            = 0x4L, // include all children

    kRegIterDescendants         = 0x5L, // include all subtrees of entry

    kRegIterSibling             = 0x6L, // include all siblings

    kRegIterContinue            = 0x1L  // keep doing the same thing

};