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Is it possible to execute the MatLab "Disp" function from DLL?

Asked by Vincent

Vincent (view profile)

on 30 Nov 2012

A library file & .dll has been created using MatLab so that I could use it in my 64-bit C application. The MatLab script that I would like to call from the C application creates a diary, and uses the "disp" function to generate the text file.

When I execute the MatLab script from my C application, the following errors are generated: "Error writing to output stream" and "Error using ==> disp". If I change my MatLab script so that the text file is generated using fprintf, I do not see the error.

Is there a way that I can resolve the issue without using the "fprintf" approach?

2 Comments

Walter Roberson

Walter Roberson (view profile)

on 30 Nov 2012

Are you using MATLAB Compiler, or MATLAB Coder?

Vincent

Vincent (view profile)

on 3 Dec 2012

The .lib, .h, and .dll files were generated with the Matlab Compiler. I added these files to my ANSI C application built in LabWindows. I have the Compiler Runtime installed on the PC where the C application will execute.

Vincent

Vincent (view profile)

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1 Answer

Answer by Image Analyst

Image Analyst (view profile)

on 30 Nov 2012

You can just put the name of the variable all by itself on the line of code and I would think that it would display it just like it does when you do the same thing in the command window. By the way, what's wrong with fprintf()? And it's not clear to me whether you want to print to the console window (like disp should do), or to a text file (like you mentioned). Where do you want to print your stuff, the console window, a text file, or both?

1 Comment

Vincent

Vincent (view profile)

on 3 Dec 2012

I want to print to a text file only. There is nothing wrong with fprintf, but we wanted to see if there's a way to get the diary/disp method to work when executed inside of a C application using .lib/.dll. This is what we have used now to print to file, and we wanted to make the least amount of changes to the Matlab script as possible.

Image Analyst

Image Analyst (view profile)

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