IOCTL_CHANGER_GET_PARAMETERS IOCTL

Retrieves the parameters of the specified device.

To perform this operation, call the DeviceIoControl function with the following parameters.

C++
BOOL DeviceIoControl(
  (HANDLE) hDevice,             // handle to device
  IOCTL_CHANGER_GET_PARAMETERS, // dwIoControlCodeNULL,                         // lpInBuffer0,                            // nInBufferSize(LPVOID) lpOutBuffer,         // output buffer
  (DWORD) nOutBufferSize,       // size of output buffer
  (LPDWORD) lpBytesReturned,    // number of bytes returned
  (LPOVERLAPPED) lpOverlapped   // OVERLAPPED structure
);

Major Code

IRP_MJ_DEVICE_CONTROL

Input Buffer

Input Buffer Length

Output Buffer

Output Buffer Length

Input / Output Buffer

Input / Output Buffer Length

Status Block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful.

Otherwise, Status to the appropriate error condition as a NTSTATUS code.

For more information, see NTSTATUS Values.

Requirements

   
Windows version Windows XP Windows Server 2003
Header winioctl.h (include Windows.h)

See Also

Device Management Control Codes

DeviceIoControl

GET_CHANGER_PARAMETERS