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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| -
| Header File
| winnt.h
| Unicode
| No
| Platform Notes
| None
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TAPE_SET_POSITION
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;
Members
Method
Specifies the type of positioning. This member must be one of the following
values:
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.
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Partition
Specifies the partition to position within. If this member is zero, the
current partition is assumed.
OffsetLow
Specifies the low-order 32 bits of the block address or count for the position
operation specified by the Method member.
OffsetHigh
Specifies the high-order 32 bits of the block address or count for the
position operation specified by the Method member. If the high-order 32 bits are not required, this member should be
zero.
Remarks
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).
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