need to use autohotkey in c#

i plan to call c++ dll from autohotkey but i couldn't make it work. this is what i done and tried and it return null hModule := DllCall("LoadLibrary", "Str", "[login to view URL]", "Ptr") CaptchaProc := DllCall("GetProcAddress", "Ptr", hModule, "AStr", "CaptchaProc", "Ptr") test := DllCall(CaptchaProc, "Str", "[login to view URL]", "Str*", out) MsgBox, %out% MsgBox, %test% this is exposure part in [login to view URL] void CaptchaProc(char* path, char* output) { Mat frame = imread(path), blob;