#include    <Files.h>

#include    <Quickdraw.h>

#include    <Windows.h>

#include    <dialogs.h>

#include    <OSEvents.h>

#include    <StandardFile.h>

#include    <Memory.h>

#include    <StdIO.h>

#define TRUE            0xFF

#define FALSE           0

main()

{

    ParmBlkPtr          myRecPtr;

    HParmBlkPtr         myVRecPtr;

    OSErr               err;

    Point               where = {20,20};

    SFReply             reply;

    short               refnum;

    char*               string;

    InitGraf(&qd.thePort);

    FlushEvents(everyEvent, 0);

    InitWindows();

    InitDialogs(nil);

    InitCursor();

/* does not work version */

    string = (char*) "\pWhere is junk file";

    SFGetFile (where, (Str255) string, nil, -1, (SFTypeList) nil, nil, &reply);

    err = FSOpen(reply.fName, reply.vRefNum, &refnum);

    if (err != noErr)

        Debugger();

    myRecPtr = (ParmBlkPtr) NewPtrClear(sizeof(ParamBlockRec));;

    myRecPtr->ioParam.ioRefNum = refnum;

    myRecPtr->ioParam.ioReqCount = 0x7fffffff;

    err = PBAllocate (myRecPtr, FALSE);

    printf("error = %d, Actual count = %d\n",err, myRecPtr->ioParam.ioActCount);

    err = FSClose(refnum);

    if (err != noErr)

        Debugger();

/* The method which works - work around to above bug */

    string = (char*) "\pWhere is File";

    SFGetFile (where, (Str255) string, nil, -1, (SFTypeList) nil, nil, &reply);

    err = FSOpen(reply.fName, reply.vRefNum, &refnum);

    if (err != noErr)

        Debugger();

    myVRecPtr = (HParmBlkPtr) NewPtrClear(sizeof(HParamBlockRec));;

    myVRecPtr->volumeParam.ioVRefNum = reply.vRefNum;

    err = PBHGetVInfo(myVRecPtr, FALSE);

    if (err != noErr)

        Debugger();

    printf("# of blocks = %d\n Size of blocks = %d\n",myVRecPtr->volumeParam.ioVNmAlBlks, myVRecPtr->volumeParam.ioVAlBlkSiz);

    myRecPtr = (ParmBlkPtr) NewPtrClear(sizeof(ParamBlockRec));;

    myRecPtr->ioParam.ioRefNum = refnum;

    myRecPtr->ioParam.ioReqCount = (myVRecPtr->volumeParam.ioVNmAlBlks) * 

                                    (myVRecPtr->volumeParam.ioVAlBlkSiz);

    err = PBAllocate (myRecPtr, FALSE);

    printf("error = %d, Actual count = %d\n",err, myRecPtr->ioParam.ioActCount);

    err = FSClose(refnum);

    if (err != noErr)

        Debugger();

}