User`s manual

Additional ActiveX Server Information
7-21
Additional ActiveX Server Information
Launching the MATLAB ActiveX Server
For MATLAB to act as an automation server, it must be started with the /
Automation command line argument. Microsoft Windows does this
automatically when an ActiveX connection is established by a controller.
However, if MATLAB is already running and was launched without this
parameter, any request by an automation controller to connect to MATLAB as
a server will cause Windows to launch another instance of MATLAB with the
/Automation
parameter. This protects controllers from interfering with any
interactive MATLAB sessions that may be running.
Specifying a Shared or Dedicated Server
You can launch the MATLAB Automation server in one of two modes — shared
or dedicated. A dedicated server is dedicated to a single client; a shared server
is shared by multiple clients.
The mode is determined by the Program ID (ProgID) used by the client to
launch MATLAB. The ProgID,
Matlab.Application, (or the version-specific
ProgID,
Matlab.Application.5) specifies the default mode, which is shared.
To specify a dedicated server, use the ProgID,
Matlab.Application.Single,
(or the version-specific ProgID,
Matlab.Application.Single.5). The term
Single refers to the number of clients that may connect to this server.
Once MATLAB is launched as a shared server, all clients that request a
connection to MATLAB by using the shared server ProgID will connect to the
already running instance of MATLAB. In other words, there is never more than
one instance of a shared server running, since it is shared by all clients that use
the ProgID that specifies a shared server.
Note Clients will not connect to an interactive instance of MATLAB, that is,
an instance of MATLAB that was launched manually and without the /
Automation command line flag.
Each client that requests a connection to MATLAB using a dedicated ProgID
will cause a separate instance of MATLAB to be launched, and that server will
not be shared with any other client. Therefore, there can be several instances