Finish example

docs/Basics.md

@@ -94,6 +94,13 @@ In order to achieve this we use [hooks](./Hooks.md).
 #define WIDTH 256
 #define HEIGHT 256
 
+// Exit the program as failure.
+static void ft_error(void)
+{
+	fprintf(stderr, "%s", mlx_strerror(mlx_errno));
+	exit(EXIT_FAILURE);
+}
+
 // Print the window width and height.
 static void ft_hook(void* param)
 {
@@ -107,17 +114,19 @@ int32_t	main(void)
 
 	// MLX allows you to define its core behaviour before startup.
 	mlx_set_setting(MLX_MAXIMIZED, true);
-	mlx_set_setting(MLX_STRETCH_IMAGE, true);
 	mlx_t* mlx = mlx_init(WIDTH, HEIGHT, "42Balls", true);
 	if (!mlx)
-		return (EXIT_FAILURE);	
+		ft_error();
 
 	/* Do stuff */
 
-
+	// Create and display the image.
 	mlx_image_t* img = mlx_new_image(mlx, 256, 256);
-	if
+	if (!img || (mlx_image_to_window(mlx, img, 0, 0) < 0))
+		ft_error();
 
+	// Even after the image is being displayed, we can still modify the buffer.
+	mlx_put_pixel(img, 0, 0, 0xFF0000FF);
 
 	// Register a hook and pass mlx as an optional param.
 	// NOTE: Do this before calling mlx_loop!