How to get the return value of a c++ function from a .dll in matlab?

Hi,

I want to execute a function from a .dll file in matlab. I got this part of the code running:

addpath('C:\Program Files (x86)\Measurement Computing\DAQ')
if not(libisloaded('mccLib'))
    loadlibrary('cbw64','cbw.h','alias','mccLib');
end
libfunctionsview('mccLib')
calllib('mccLib','cbFlashLED',0);  % LED flashing is working!

Now I want to execute another function with a return value.

The function doc of the .dll in c++ says:

int functionName(arg1,agr2, float *ReturnValue)

And for Visual Basic

Function functionName(arg1&, arg2&, ReturnValue!) As Long

I tried:

x=calllib('mccLib','functionname',1,1);

Error using calllib
No method with matching signature.

Is there a way to get the return value in matlab?

Thanks a lot

Answer 1

[Peer Blumido]

calllib('mccLib','cbFlashLED',0);

0 is the value for turn flash light on?

This " float *ReturnValue" seems like you need a pointer. Did you already solve the problem?