I can't seem to get Ctypes to find my c++ functions declared within a DLL file.

[Jory R Ferrell]

The following attachments may help better than my own description.

CTypes_1 is a picture of the python code calling the function from the DLL.

CTypes_2 is the code contained within the DLL. (Before compilation of course. The actual DLL looks nothing like this.)

CTypes_3 is the DLL located in the directory I am calling it from during import. It is clearly labeled as a DLL, so I didn't just try to use the wrong file type (would've thrown an error anyways).

CTypes_4 is the actual error output from python.

I have been using older tutorials I suppose, but I would assume that of the four or so ways I have seen people implement to load the files hasn't really changed all that much, so it must be something I am missing. Did I create the functions in the DLL incorrectly? Did I screw-up the import in the python code somehow? I am not seeing what the problem is. Thanks in advance.

[Jory R Ferrell]

As for my choice of function names....mind your business. :P

(O_o)

[Jory R Ferrell]

Ok...ok...calm down everyone. I appreciate the OVERWHELMING amount of help I have received, but I found the answer on my own:
http://wolfprojects.altervista.org/dllforpyinc.php

Apparently you need to add a directive to the cpp code and then set-up the function for export as a dll asset. I JUST found this solution so I am not sure what makes it tick (I am not very familiar with c++), but I'll read up on it some and let you know what I find....if I even understand it... :P
I haven't seen any other examples that have to jump through this hoop when creating the dll (If they did, they left out some steps :/ ), but it's working now.
The following added to the c++ verision dll (diff for straight "C" code), gets the entire thing working:

// ConsApp.cpp : Defines the exported functions for the DLL application.
//
 
#include "stdafx.h"
#define DLLEXPORT extern "C" __declspec(dllexport)
 
DLLEXPORT int otters(int a, int b) {
    return a + b;
}
 
DLLEXPORT int ducks(int a, int b){
    return(a-b);
}