IOCTL_CHANGER_SET_ACCESS IOCTL (winioctl.h)

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.

BOOL DeviceIoControl(
  (HANDLE) hDevice,             // handle to device
  IOCTL_CHANGER_SET_ACCESS,     // dwIoControlCode
  (LPVOID) lpInBuffer,          // input buffer
  (DWORD) nInBufferSize,        // size of input buffer
  NULL,                         // lpOutBuffer
  0,                            // nOutBufferSize
  (LPDWORD) lpBytesReturned,    // number of bytes returned
  (LPOVERLAPPED) lpOverlapped   // OVERLAPPED structure
);

Requirements

See also

• CHANGER_SET_ACCESS
• Device Management Control Codes
• DeviceIoControl