How do I call a MATLAB Compiler 4.4 (2006a) generated shared library function that has variable number of input arguments from my C++ application?

I would like to call a MATLAB Compiler 4.4 (2006a) generated shared library function that uses VARARGIN to handle a variable number of input arguments from my C++ application.

Answer 1

[MathWorks Support Team]

The attached example files demonstrate calling a C++ shared library function which uses VARARGIN and VARARGOUT.

To execute the example code, perform the following steps:

1. Download the files vararg_example.cpp and makeplot.m to your current directory.

2. At the MATLAB prompt, compile the MATLAB file makeplot.m into a C++ shared library with the command:

 mcc -B cpplib:libplot makeplot.m

3. Compile the C++ program with the command:

 mbuild vararg_example.cpp libplot.lib

4. Execute the resulting EXE file from the MATLAB prompt:

 !vararg_example.exe

Alternatively, the EXE can be executed from the DOS prompt in the current directory:

 vararg_example.exe

The following modifications on "vararg_example.cpp" can be done to pass fewer arguments to the MAKEPLOT library function:

1. For passing no input arguments to MAKEPLOT, replace the following block of code:

mwArray input(1, 2, mxCELL_CLASS);

// Assign values to cell array "input":

mwArray range(1, 2, mxDOUBLE_CLASS);

range(1,1) = 5;

range(1,2) = 10;   // Range of data to be plotted.

mwArray title("Random numbers between 5 and 10"); // Plot title

input.Get(1,1).Set(range);

input.Get(1,2).Set(title);

with

mwArray input;