View difference between Paste ID: tRyDhkUd and 66xLYAzt

 #include <stdlib.h>
-#include <SFML/Graphics.hpp>
+
-#include <SFML/OpenGL.hpp>
+#include <SFML/Window.hpp>
 #include <X11/Xlib.h>
 #include <GL/gl.h>
 
 bool running = true;
 
 class RenderTask
 {
-	RenderTask(sf::RenderWindow& window):window(window) {}
+
 	RenderTask(sf::Window& window):window(window) {}
 	virtual ~RenderTask() {}
 
 	void run()
 	{
 		window.setActive();
 		window.setVerticalSyncEnabled(true);
 
 		sf::Clock clock;
 		while (running) {
 
 			std::cout << clock.getElapsedTime().asMilliseconds() << std::endl;
 			clock.restart();
 
 			glClear(GL_COLOR_BUFFER_BIT);
 			window.display();
 		}
 	}
 
-	sf::RenderWindow& window;
+
 	sf::Window& window;
 };
-int main(int argc, char **argv)
+
-{
+int main()
 {
 	XInitThreads();
-	sf::RenderWindow window(sf::VideoMode(1024, 768), "Test", sf::Style::Close, sf::ContextSettings(32));
+
-	window.setActive(false);
+	Display* display = XOpenDisplay(NULL);
 	if (!display) {
-	RenderTask renderTask(window);
+		return EXIT_FAILURE;
 	}
 
 	Window window = XCreateSimpleWindow(display, DefaultRootWindow(display),
 			0, 0, 1024, 768,
 			0, 0, 0);
-		sf::Event event;
+	XStoreName(display, window, "X11 Test");
-		while (window.pollEvent(event)) {
+
-			if (event.type == sf::Event::Closed)
+	XMapWindow(display, window);
-				running = false;
+	XFlush(display);
 
 	Atom wmDeleteWindow = XInternAtom(display, "WM_DELETE_WINDOW", True);
-		sf::sleep(sf::milliseconds(10));
+	XSetWMProtocols(display, window, &wmDeleteWindow, 1);
 
 	sf::Window sfmlWindow(window);
 	sfmlWindow.setActive(false);
-	window.close();
+
 	RenderTask renderTask(sfmlWindow);
-	return 0;
+
 	renderThread.launch();
 
 	while (running) {
 
 		while (running && XPending(display)) {
 			XEvent event;
 			XNextEvent(display, &event);
 			switch (event.type) {
 				case ClientMessage:
 					if ((Atom)event.xclient.data.l[0] == wmDeleteWindow) {
 						running = false;
 					}
 					break;
 			}
 		}
 
 	}
 
 
 	renderThread.wait();
 	sfmlWindow.close();
 	XCloseDisplay(display);
 
 	return EXIT_SUCCESS;
 }