int CGlView::InitGL(GLvoid)          
{
   GLfloat light_ambient[] = { 1.0, 1.0, 1.0, 0.1 };
    GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 0.1 };
    GLfloat light_specular[] = { 1.0, 1.0, 1.0,0.1 };
    GLfloat light_position[] = { 1.0, 0.0, 0.0, 0.0 };
 
    glLightfv (GL_LIGHT0, GL_DIFFUSE, light_diffuse);
    glLightfv (GL_LIGHT0, GL_POSITION, light_position);
    
    glEnable (GL_LIGHTING);
    glEnable (GL_LIGHT0);
    glDepthFunc(GL_LESS);
    glEnable(GL_DEPTH_TEST);
//Crear Menu
  glutCreateMenu(controlTransf);
    glutAddMenuEntry("Borrar Pantalla",1);
    glutAddMenuEntry("Salir",2);
    glutAttachMenu(GLUT_RIGHT_BUTTON);
 
  return TRUE;                    
}