Cannot inject Ginn's gestures in a SDL window

Hello

Although I'm able to configure a basic 'wishes.xml' file and have it working on other applications, I still cannot inject gestures through Ginn in a SDL window of a program I've made. My SDL window can receive some keyboard events, and I get them in the SDL window with either " SDL_GetKeyState(NULL)" or
  SDL_PollEvent(&event);
  switch (event.type)
   {
       switch(event.key.keysym.sym) {
    case SDLK_ESCAPE:
     SDL_QUIT()
     break;
                                case ........
    }
   }

I don't know if this has to presented here. I suppose it is related to the way keyboard events are detected in SDL. However would you know if I can do something to have it working?

Thank you

Victor