MATLAB Answers

How can I find out what the default MATLAB COM Automation Server is when I have different versions installed?

Asked by MathWorks Support Team on 23 Mar 2010
Latest activity Commented on by Madhura Suresh on 19 Dec 2014

I have multiple versions of MATLAB installed on my system. I would like to interface with MATLAB through the COM Automation Server interface. Is there a way to determine what version is being called by default?


2 Answers

Answer by MathWorks Support Team on 18 Oct 2013
 Accepted answer

The following code will determine what the default server is and if the MATLAB executable that is specified in it exists or not:

function getmatlabdefaultserver()
function getdefaultserver(serverApplication)
if ~exist('serverApplication', 'var')
error('Please specify a server application');
      % Get registry keys.
      serverAppCLSID = winqueryreg('HKEY_CLASSES_ROOT', [serverApplication '\CLSID\']);
      progId = winqueryreg('HKEY_CLASSES_ROOT', ['CLSID\' serverAppCLSID '\']);
      localServer32 = winqueryreg('HKEY_CLASSES_ROOT', ['CLSID\' serverAppCLSID '\LocalServer32\']);
      disp(['The default Automation Server for "' serverApplication '" on this machine is:'])
      disp(['ProgId: ' progId]);
      disp(['LocalServer32: ' localServer32]);
      disp(['CLSID: ' serverAppCLSID]);
      % Parse server application's path.
      serverAppPath = regexpi(localServer32, '.*\.exe', 'match', 'once');
      serverAppPath = strrep(serverAppPath, '"', ''); % Remove ".
      % Check if executable exists.
      if ~isempty(serverAppPath)
          if exist(serverAppPath, 'file')
              disp(['File exists: ''' serverAppPath '''']);
              warning(['File does not exist: ' serverAppPath]);
      disp('There was an error while reading the registry.');

To register a certain MATLAB version as the default server, execute the following command in the MATLAB Command Window of your desired version, as specified in the related solution 1-3ZJXQR:

!matlab -regserver


Answer by Stev
on 15 Dec 2014

Is it possible to have different dcom servers for 2010b and 2010bSP2?

  1 Comment

Madhura Suresh on 19 Dec 2014

Stev, This article is for COM servers, not DCOM servers.

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply today