Import in C# bundle written in c++ (Unity3D project) -

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i try use functions .bundle file inside unity3d every time when call functions error:

dllnotfoundexception: libant connectant.start () (at assets/connectant.cs:13)

this script use call library antlib.bundle in assets/plugin folder:

using unityengine; using system.collections; using system.runtime.interopservices;  public class connectant : monobehaviour { [dllimport("libant")] static extern bool ant_init(int ucusbdevicenum_, int ulbaudrate_);  void start () {     ant_init (1, 50000); } }

in bundle function declared this:

#ifdef __cplusplus extern "c" { #endif export bool ant_init(uchar ucusbdevicenum_, ulong ulbaudrate_);  //initializes , opens usb connection module #ifdef __cplusplus } #endif

this example 1 function bundle. if import functions in script don't error in unity. can me figure out?

try this:

[dllimport("antlib.bundle")] static extern int ant_init(byte ucusbdevicenum_, uint ulbaudrate_);

there're 2 problems in code:

  1. wrong file name
  2. wrong argument type , return type

if want use bool return type, attribute required:

[return: system.runtime.interopservices.marshalasattribute(system.runtime.interopservices.unmanagedtype.bool)] [dllimport("antlib.bundle")] static extern bool ant_init(byte ucusbdevicenum_, uint ulbaudrate_);

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