The TAPE_SET_POSITION structure describes how and where to position the tape.
typedef struct _TAPE_SET_POSITION { // tspos ULONG Method; ULONG Partition; ULONG OffsetLow; ULONG OffsetHigh; } TAPE_SET_POSITION;
Value |
Description |
TAPE_ABSOLUTE_BLOCK |
Moves the tape to the device-specific block address specified by the OffsetLow and OffsetHigh members. The Partition member is ignored. |
TAPE_LOGICAL_BLOCK |
Moves the tape to the block address specified by OffsetLow and OffsetHigh in the partition specified by Partition. |
TAPE_REWIND |
Moves the tape to the beginning of the current partition. The Partition, OffsetLow, and OffsetHigh members are ignored. |
TAPE_SPACE_END_OF_DATA |
Moves the tape to the end of the data on the partition specified by Partition. |
TAPE_SPACE_FILEMARKS |
Moves the tape forward (or backward) the number of filemarks specified by OffsetLow and OffsetHigh in the current partition. The Partition member is ignored. |
TAPE_SPACE_RELATIVE_BLOCKS |
Moves the tape forward (or backward) the number of blocks specified by OffsetLow and OffsetHigh in the current partition. The Partition member is ignored. |
TAPE_SPACE_SEQUENTIAL_FMKS |
Moves the tape forward (or backward) to the first occurrence of n filemarks in the current partition, where n is the number specified by OffsetLow and OffsetHigh. The Partition parameter is ignored. |
TAPE_SPACE_SEQUENTIAL_SMKS |
Moves the tape forward (or backward) to the first occurrence of n setmarks in the current partition, where n is the number specified by OffsetLow and OffsetHigh. The Partition member is ignored. |
TAPE_SPACE_SETMARKS |
Moves the tape forward (or backward) the number of setmarks specified by OffsetLow and OffsetHigh in the current partition. The Partition member is ignored. |
If the positioning is relative, a positive offset moves the tape forward (toward the end of the tape) and a negative offset moves the tape backward (toward the beginning of the tape).
file: /Techref/os/win/api/win32/struc/src/str20_55.htm, 5KB, , updated: 2000/4/7 12:20, local time: 2024/8/16 12:34,
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