// --------------------------------------------------------------------------
// Quit from the Window Manager
// --------------------------------------------------------------------------
static void Quit(IlvView* view, IlvAny)
{
  IlvDisplay* display = view->getDisplay();
  delete view;
  delete display;
  IlvExit(0);
}

static void TimerAction(IlvTimer*, IlvAny arg)
{
  static IlvUInt currentValue = 0;
  static IlvInt  increment = 2;
  // Get the Value Source
  IlvValueSource* valueSource = (IlvValueSource*)arg;
  // Value variation
  currentValue += increment;
  // Min and Max tests
  if ((currentValue < 0) || (currentValue > 100))
  {
    currentValue -= increment;
    increment = -increment;
  }
  // Push the new value
  valueSource->pushValue(IlvValue("SuperGaugeData", currentValue));
}

int main(int argc, char* argv[]) 
{
  IlvDisplay* display = new IlvDisplay("Protos", 0, argc, argv);
  if (!display || display->isBad())
  {
    IlvFatalError("Couldn't open display");
    delete display;
    return -1;
  }

  IlvProtoManager* protoman = new IlvProtoManager(display);
  IlvView* view = new IlvView(display, "Proto sample", "Proto sample", 
           IlvRect(0, 0, 400, 180));
  protoman->addView(view);

  // Load a data file into the Prototype manager
  protoman->read("GaugePanel.ilv");

  // Get a pointer to the value source
  IlvValueSource* source = protoman->getValueSource("AppliData");
  // Create a timer for animation
  IlvTimer* timer = new IlvTimer(display, 0, 50, TimerAction, source);
  timer->run();

  // Create a view for the manager
  view->setDestroyCallback(Quit);
  // Set double-buffering to avoid flickering
  protoman->setDoubleBuffering(view, IlvTrue);
  view->show();

  // Wait for user events
  IlvMainLoop();
  return 0;
}