Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Returns the parameters of the device.
Major code
Input buffer
None.
Input buffer length
None.
Output buffer
The driver returns the GET_CHANGER_PARAMETERS data in the buffer at Irp->AssociatedIrp.SystemBuffer.
Output buffer length
Parameters.DeviceIoControl.OutputBufferLength in the I/O stack ___location indicates the size, in bytes, of the parameter buffer, which must be >= sizeof(GET_CHANGER_PARAMETERS).
Status block
The Information field is set to the number of bytes returned. The Status field is set to STATUS_SUCCESS, or possibly to STATUS_INFO_LENGTH_MISMATCH or STATUS_INSUFFICIENT_RESOURCES.
Requirements
Requirement | Value |
---|---|
Header | ntddchgr.h (include Ntddchgr.h) |