SFML Sample

#include <SFML/Graphics.hpp>

int main() {
    sf::RenderWindow window(sf::VideoMode(400,300), "SFML Example");

    sf::RectangleShape rectangle;
    rectangle.setPosition(30,30);
    rectangle.setSize(sf::Vector2f(50,30));
    rectangle.setFillColor(sf::Color::Green);
    rectangle.setOutlineThickness(3);
    rectangle.setOutlineColor(sf::Color::Blue);


    while(window.isOpen()) {

        window.clear(sf::Color(255,255,255));
        window.draw(rectangle);
        window.display();

        sf::Event event;
        while(window.pollEvent(event)) {
            if(event.type == sf::Event::Closed)
                window.close();
            if(event.type == sf::Event::KeyPressed) {
                switch(event.key.code) {
                case sf::Keyboard::Up:
                    rectangle.move(0,-10);
                    break;
                case sf::Keyboard::Down:
                    rectangle.move(0,10);
                    break;
                case sf::Keyboard::Left:
                    rectangle.move(-10,0);
                    break;
                case sf::Keyboard::Right:
                    rectangle.move(10,0);
                    break;
                }
            }
        }
    }
}