IOCTL_CHANGER_SET_ACCESS IOCTL

Sets the state of the device's insert/eject port, door, or keypad.

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

C++
BOOL DeviceIoControl(
  (HANDLE) hDevice,             // handle to device
  IOCTL_CHANGER_SET_ACCESS,     // dwIoControlCode(LPVOID) lpInBuffer,          // input buffer
  (DWORD) nInBufferSize,        // size of input buffer
  NULL,                         // lpOutBuffer0,                            // nOutBufferSize(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_SET_ACCESS

Device Management Control Codes

DeviceIoControl