You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: rfbevent.m
    path of file: ./repos/spm12/external/fieldtrip/src
    
    the code of the file until where you have to start completion: function [varargout] = rfbevent(varargin)

% RFBEVENT sends a keyboard or mouse event to a VNC server
%
% RFB ("remote frame buffer") is a simple protocol for remote access to
% graphical user interfaces. Because it works at the framebuffer level it
% is applicable to all windowing systems and applications, including X11,
% Windows and Macintosh. RFB is the protocol used in VNC (Virtual Network
% Computing).
%
% The remote endpoint where the user sits (i.e. the display plus keyboard
% and/or pointer) is called the RFB client or viewer. The endpoint where
% changes to the framebuffer originate (i.e. the windowing system and
% applications) is known as the RFB server.
%
% Use as
%   rfbevent(display, passwd, eventtype, eventvalue, ...)
%
% Some examples
%   rfbevent('vncserver:5901', 'yourpasswd', 'Text',   'xclock')          % type multiple characters
%   rfbevent('vncserver:5901', 'yourpasswd', 'Button', 'Return')          % single key event, press and release
%   rfbevent('vncserver:5901', 'yourpasswd', 'Button', 'Return',  0)      % single key event, press and release
%   rfbevent('vncserver:5901', 'yourpasswd', 'Button', 'Return',  1)      % single key event, press only
%   rfbevent('vncserver:5901', 'yourpasswd', 'Button', 'Return', -1)      % single key event, release only
%   rfbevent('vncserver:5901', 'yourpasswd', 'Pointer', [20 100])         % only mouse position
%   rfbevent('vncserver:5901', 'yourpasswd', 'Pointer', [20 100 1])       % mouse position and button 1, press and release
%   rfbevent('vncserver:5901', 'yourpasswd', 'Pointer', [20 100 1],  0)   % mouse position and button 1, press and release
%   rfbevent('vncserver:5901', 'yourpasswd', 'Pointer'
    
function that is using RFBEVENT, which poses a potential security
% problem. The password is sent over the network to the VNC server after
% being encrypted.
%
% This implements the KeyEvent and PointerEvent messages according to
% "The RFB Protocol" by Tristan Richardson (RealVNC Ltd, formerly of
% Olivetti Research Ltd / AT&T Labs Cambridge) Version 3.8 (Last updated 8
% June 2007), http://www.realvnc.com/docs/rfbproto.pdf

% Copyright (C) 2008, Robert Oostenveld
%
% This file is part of FieldTrip, see http://www.fieldtriptoolbox.org
% for the documentation and details.
%
%    FieldTrip is free software: you can redistribute it and/or modify
%    it under the terms of the GNU General Public License as published by
%    the Free Software Foundation, either version 3 of the License, or
%    (at your option) any later version.
%
%    FieldTrip is distributed in the hope that it will be useful,
%    but WITHOUT ANY WARRANTY; without even the implied warranty of
%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%    GNU General Public License for more details.
%
%    You should have received a copy of the GNU General Public License
%    along with FieldTrip. If not, see <http://www.gnu.org/licenses/>.
%
% $Id$

% remember the original working directory
pwdir = pwd;

% determine the name and full path of this function
funname = mfilename('fullpath');
mexsrc  = [funname '.c'];
[mexdir, mexname] = fileparts(funname);

try
  % try to compile the mex file on the fly
  warning('trying to compile MEX file from %s', mexsrc);
  cd(mexdir);

  % the following is specific for this particular mex file
  mex rfbevent.c d3des.c

  cd(pwdir);
  success = true;

catch
  % compilation failed
  disp(lasterr);
  error('could not locate MEX file for %s', mexname);
  cd(pwdir);
  success = false;
end