|
|
| GetTapePosition The GetTapePosition function retrieves the current address of the tape, in logical or absolute blocks. VB4-32,5,6
Declare Function GetTapePosition Lib "kernel32" Alias "GetTapePosition" (ByVal hDevice As Long, ByVal dwPositionType As Long, lpdwPartition As Long, lpdwOffsetLow As Long, lpdwOffsetHigh As Long) As Long |
| Operating Systems Supported |
| Requires Windows NT 3.1 or later; Win9x/ME: Not supported |
· hDevice
Identifies the device on which to get the tape position. This handle is created by using CreateFile.
· dwPositionType
Specifies the type of address to obtain. This parameter can be one of the following values:
TAPE_ABSOLUTE_POSITION
The lpdwOffsetLow and lpdwOffsetHigh parameters receive the device-specific block address. The dwPartition parameter receives zero.
TAPE_LOGICAL_POSITION
The lpdwOffsetLow and lpdwOffsetHigh parameters receive the logical block address. The dwPartition parameter receives the logical tape partition.
· lpdwPartition
Points to a variable that receives the number of the current tape partition. Partitions are numbered logically from 1 through n, where 1 is the first partition on the tape and n is the last. When a device-specific block address is retrieved, or if the device supports only one partition, this parameter receives zero.
· lpdwOffsetLow
Points to a variable that receives the low-order 32 bits of the current tape position.
· lpdwOffsetHigh
Points to a variable that receives the high-order 32 bits of the current tape position. This parameter can be NULL if the high-order 32 bits are not required. |
If the function succeeds, the return value is NO_ERROR.
If the function fails, the return value is one of the following error codes:
ERROR_BEGINNING_OF_MEDIA
An attempt to access data before the beginning-of-medium marker failed.
ERROR_BUS_RESET
A reset condition was detected on the bus.
ERROR_END_OF_MEDIA
The end-of-tape marker was reached during an operation.
ERROR_FILEMARK_DETECTED
A filemark was reached during an operation.
ERROR_SETMARK_DETECTED
A setmark was reached during an operation.
ERROR_NO_DATA_DETECTED
The end-of-data marker was reached during an operation.
ERROR_PARTITION_FAILURE
The tape could not be partitioned.
ERROR_INVALID_BLOCK_LENGTH
The block size is incorrect on a new tape in a multivolume partition.
ERROR_DEVICE_NOT_PARTITIONED
The partition information could not be found when a tape was being loaded.
ERROR_MEDIA_CHANGED
The tape that was in the drive has been replaced or removed.
ERROR_NO_MEDIA_IN_DRIVE
There is no media in the drive.
ERROR_NOT_SUPPORTED
The tape driver does not support a requested function.
ERROR_UNABLE_TO_LOCK_MEDIA
An attempt to lock the ejection mechanism failed.
ERROR_UNABLE_TO_UNLOAD_MEDIA
An attempt to unload the tape failed.
ERROR_WRITE_PROTECT
The media is write protected. |
|
|
|
