[Irlicht] Problem z oknem 3D

#include <irrlicht.h>

using namespace irr;
using namespace core;
using namespace scene;
using namespace video;

int main()

{
    IrrlichtDevice * device = createDevice( EDT_OPENGL, core::dimension2d < u32 >( 800, 600 ),
    32, false, false, false, 0 );
   
    video::IVideoDriver * video = device->getVideoDriver();
    scene::ISceneManager * menage = device->getSceneManager();
    menage->addCameraSceneNode( 0, vector3df( 0, 30, - 40 ), vector3df( 0, 5, 0 ) );
   
    while( device->run() )
   
    {
        video->beginScene( true, true, video::SColor( 255, 0, 10, 200 ) );
        menage->drawAll();
        video->endScene();
    }
    device->drop();
    return 0;
}