IOCTL_CHANGER_SET_POSITION IOCTL (ntddchgr.h)
Sets the changer's robotic transport mechanism to the specified element address, typically to optimize moving or exchanging media by positioning the transport beforehand.
Major code
Input buffer
The buffer at Irp->AssociatedIrp.SystemBuffer contains a CHANGER_SET_POSITION structure that specifies the transport to move and the destination. If the Flip member is TRUE and the device supports two-sided media, the media currently carried by the transport should be flipped.
Input buffer length
Parameters.DeviceIoControl.InputBufferLength in the I/O stack location indicates the size, in bytes, of the parameter buffer, which must be >= sizeof(CHANGER_SET_POSITION).
Output buffer
None.
Output buffer length
None.
Status block
The Information field is set to sizeof(CHANGER_SET_POSITION). The Status field is set to STATUS_SUCCESS, or possibly to STATUS_INFO_LENGTH_MISMATCH, STATUS_INSUFFICIENT_RESOURCES, STATUS_INVALID_DEVICE_REQUEST, or STATUS_INVALID_PARAMETER.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddchgr.h (include Ntddchgr.h) |