无法在python中使用opencv加载dll

Question

I am trying to build a c++ dll using visual studio and load this dll in python. The dll code

#define DLLEXPORT extern "C" __declspec(dllexport)

#include "test.h"
#include "opencv2\\highgui.hpp"

using namespace cv;

DLLEXPORT int sumV() {

    Mat a = Mat::zeros(5,5, CV_8U);


    return 11;

}

and python code is

from ctypes import *
from ctypes.util import *

dll = find_library('C:\\path\\dll1.dll')
lib = cdll.LoadLibrary(dll)

I always got "OSError: [WinError 126] The specified module could not be found." when I run the python code.

Does anyone know how to solve this problem? thanks a lot.

Answer 1

Here is how I fixed the problem. In my c++ code, I called opencv function, but I forget copying the opencv dll to my python script folder. So python can't find it. Thanks Yunus again for the help.