[SOLVED] Plugin using other .dlls

[Linus]

I'm trying to write a C++ plugin to add some to add some functionality of an external dll library into unigine.

So what I did was create a Plugin.dll to load into Unigine, and that plugin in turn calls function from the external dll library.

My plugin code looks like this:

 

class MyPlugin: public Unigine::Plugin
{
public:
 MyPlugin() { }

 virtual ~MyPlugin() { }

 virtual int init()
 {
  Unigine::Log::warning("HeadtrackingPlugin::init() is called\n");

  ExternalLib::do_something();

  return 1;
 }

 virtual int shutdown()
 {
  Unigine::Log::warning("HeadtrackingPlugin::shutdown() is called\n");
  return 1;
 }

 virtual void update() { }
};

extern "C" UNIGINE_API void *CreatePlugin() {
return new MyPlugin();
}

extern "C" UNIGINE_API void ReleasePlugin(void *plugin) {
delete static_cast<MyPlugin*>(plugin);
}

 

If I take out the line ExternalLib::do_something(); everything works fine (I see the log messages), but when I leave the line in Unigine crashes without any error messages.

There are no error messages in the log file either.

 

I put the external dll in the same folder as the Unigine executable.

 

Does anyone know what could be causing the crash?

Edited October 16, 2012 by Linus

[fonta.romain]

Could you post the entire source code ?

 

I've made a head tracking system without any problems using Unigine plugins. (Intersense inertia Cube 2 and Razer Hydra)

 

Which hardware / software are you using ?

[Linus]

This is the entire source:

HeadtrackingLibrary.cpp

Headtracker.h

Headtracker.cpp

stdafx.h

stdafx.cpp

dllmain.cpp

targetver.h

 

I'm using a TrackIR5 camera and the Optitrack SDK.

[fonta.romain]

Don't see anything that hurts me.

 

Perhaps are you mixing debug build with release one ? Using different common runtime ?

 

If you build a fake standalone application (i.e. not using unigine at all) using your head tracker class, everything works properly ?

[Linus]

I made a standalone application and it ran without any problems. I found the problem when I compared the project settings of the standalone app and the dll.

Turns I just forgot to add a preprocessor definition for the camera SDK in the plugin project. :)

The plugin works fine now.

 

Thanks for helping out

[fonta.romain]

:)