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_BtStepFirst() Function
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_BtStepFirst() Function
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_BtStepFirst() Function
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Purpose
Position the Btrieve file on the first physical record
Prototype
FUNCTION _BtStepFirst ( hFile AS PTR, ptrData AS PTR, nRecLen REF WORD ) AS LOGIC
Argument(s)
| <hFile> | File handle that was returned by _BtOpen |
| <ptrData> | Pointer to the data structure. |
| <nRecLen> | Length of the data structure. This value must be at least as long as the fixed-length portion of the record. |
Return
| LOGIC | Was the move to the first record succesfull. |
Description
If the Step First operation is unsuccessful, the MicroKernel may return one of the following status codes:
| 03 | File Not Open |
| 09 | End of File (when the file is empty) |
| 22 | Data Buffer Length |
See Also
_BtStepLast(), _BtStepnext(), _BtStepPrevious()