gistfile1.cpp

/** key code constants definition **/
#define LEFT_KEY_CODE 100
#define RIGHT_KEY_CODE 102
#define UP_KEY_CODE 101
#define DOWN_KEY_CODE 103

//...

void keyboard(int key, int x, int y) {
	switch(key) {

	case UP_KEY_CODE:
		xRot -= 1.0f;
		glutPostRedisplay();
		break;

	case DOWN_KEY_CODE:
		xRot += 1.0f;
		glutPostRedisplay();
		break;

	case RIGHT_KEY_CODE:
		rotateRight();
		break;
	
	case LEFT_KEY_CODE:
		rotateLeft();
		break;

	default:
		break;
	}
}


// w main:
glutSpecialFunc(keyboard); // zamiast glutKeyboardFunc(keyboard);