MATLAB Compiler

Print Handlers

A print handler is a routine that controls how your application displays the output generated by calls to mlf routines.

The system provides a default print handler for your application. The default print handler writes output to the standard output stream. If this print handler is suitable for your application, you do not need to write and register another print handler.

However, you can override the default behavior by writing and registering an alternative print handler. In fact, if you are coding a stand-alone application with a GUI, then you must register another print handler to display application output inside a GUI mechanism, such as a Windows message box or a Motif Label widget.

You write an alternative print handler routine in C or C++ and register its name at the beginning of your stand-alone application.

The way you register a print handler depends on whether or not "the main routine" (or first routine called) for your application is written in C or in M.

Note    The print handlers and registration functions discussed in this section are written for C applications. Although they will work in C++ applications, we recommend that you use a C++ print handler and the C++ registration routine mwSetPrintHandler() for C++ applications. See the MATLAB C++ Math Library User's Guide for details about C++ print handlers.

Using Pragmas

Main Routine Written in C