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HFileParam |
Header: Files.h |
struct HFileParam { QElemPtr qLink; SInt16 qType; SInt16 ioTrap; Ptr ioCmdAddr; IOCompletionUPP ioCompletion; volatile OSErr ioResult; StringPtr ioNamePtr; SInt16 ioVRefNum; SInt16 ioFRefNum; SInt8 ioFVersNum; SInt8 filler1; SInt16 ioFDirIndex; SInt8 ioFlAttrib; SInt8 ioFlVersNum; FInfo ioFlFndrInfo; SInt32 ioDirID; UInt16 ioFlStBlk; SInt32 ioFlLgLen; SInt32 ioFlPyLen; UInt16 ioFlRStBlk; SInt32 ioFlRLgLen; SInt32 ioFlRPyLen; UInt32 ioFlCrDat; UInt32 ioFlMdDat; }; typedef HFileParam HFileParamPtr;
A pointer to the next entry in the file I/O queue. (This field is used internally by the File Manager to keep track of asynchronous calls awaiting execution.)
The queue type. (This field is used internally by the File Manager.)
The trap number of the function that was called. (This field is used internally by the File Manager.)
The address of the function that was called. (This field is used internally by the File Manager.)
A pointer to a completion routine to be executed at the end of an asynchronous call. It should be NULL for asynchronous calls with no completion routine and is automatically set to NULL for all synchronous calls. See IOCompletionProcPtr for information about completion routines.
The result code of the function. For synchronous calls, this field is the same as the result code of the function call itself. To determine when an asynchronous call has actually been completed, your application can poll this field; its set to a positive number when the call is made and receives the actual result code when the call is completed.
A pointer to a pathname. Whenever a function description specifies that ioNamePtr is usedwhether for input, output, or bothits very important that you set this field to point to storage for a Str255 value (if youre using a pathname) or to NULL (if youre not).
A volume specification (volume reference number, working directory reference number, drive number, or 0 for default volume).
The file reference number of an open file.
A file version number. This field is no longer used and you should always set it to 0.
Reserved.
An index for use with the PBHGetFInfo function.
File attributes. The bits in this field have these meanings
Set if file is locked.
Set if resource fork is open
Set if data fork is open
Set if a directory
Set if file (either fork) is open
A file version number. This field is no longer used and you should always set it to 0.
Information used by the Finder.
A directory ID.
The first allocation block of the data fork. This field contains 0 if the files data fork is empty.
The logical end-of-file of the data fork.
The physical end-of-file of the data fork.
The first allocation block of the resource fork.
The logical end-of-file of the resource fork.
The physical end-of-file of the resource fork.
The date and time of the files creation, specified in seconds since midnight, January 1, 1904.
The date and time of the last modification to the file, specified in seconds since midnight, January 1, 1904.
© 2000 Apple Computer, Inc. (Last Updated 6/30/2000)