IOCTL_CHANGER_GET_ELEMENT_STATUS IOCTL

Retrieves the status of all elements or a specified number of elements of a particular type.

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

C++
BOOL DeviceIoControl(
  (HANDLE) hDevice,                 // handle to device
  IOCTL_CHANGER_GET_ELEMENT_STATUS, // dwIoControlCode(LPVOID) lpInBuffer,              // input buffer
  (DWORD) nInBufferSize,            // size of input buffer
  (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

CHANGER_ELEMENT_STATUS

CHANGER_ELEMENT_STATUS_EX

CHANGER_READ_ELEMENT_STATUS

Device Management Control Codes

DeviceIoControl