Important: The information in this document is obsolete and should not be used for new development.
SReadWord
You can use theSReadWord
function to determine the value of the low-order word of an sResource entry.
FUNCTION SReadWord (spBlkPtr: SpBlockPtr): OSErr;
- spBlkPtr
- A pointer to a Slot Manager parameter block.
<-- spResult
LongInt The contents of the entry word. --> spsPointer
Ptr A pointer to an sResource (described in "The sResource," beginning on page 2-7). --> spID
SignedByte The ID of the sResource entry. X spOffsetData
LongInt X spByteLanes
SignedByte DESCRIPTION
TheSReadWord
function returns the low-order word of the offset field of an entry in an sResource. You provide a pointer to the sResource in thespsPointer
field of the Slot Manager parameter block you point to in the spBlkPtr parameter, and you provide the ID of the entry in thespID
field. TheSReadWord
function returns the value in the low-order word of thespResult
field.SPECIAL CONSIDERATIONS
This function may alter the values of thespOffsetData
andspByteLanes
fields of the parameter block. Your application should not depend on the values returned in these fields.ASSEMBLY-LANGUAGE INFORMATION
The trap macro and routine selector for theSReadWord
function are
Trap macro Selector _SlotManager $0001 You must set up register D0 with the routine selector and register A0 with the address of the Slot Manager parameter block. When
_SlotManager
returns, register D0 contains the result code.
Registers on entry A0 Address of the parameter block D0 $0001
Registers on exit D0 Result code RESULT CODES
noErr 0 No error smNoMoresRsrcs -344 Requested sResource not found