short ioDTRefNum; 2 24 desktop refnum
short ioIndex; 2 26
long ioTagInfo; 4 28
long ioDTReqCount; 4 36
long ioDTActCount; 4 40
char ioFiller1; 1 44
char ioIconType; 1 45
short ioFiller2; 2 46
long ioDirID; 4 48
long ioFiller3; 4 60
long ioDTLgLen; 4 64
long ioDTPyLen; 4 68
short ioFiller4[14]; 28 70
long ioAPPLParID; 4 98
typedef DTPBRec *DTPBPtr;