diff --git a/README.markdown b/README.markdown
index 3d7c3de..bdaf4ce 100644
--- a/README.markdown
+++ b/README.markdown
@@ -13,16 +13,19 @@ Wrapped Dear ImGui version: 1.73
 ![Hello world](hello_world.png)
 
 ```rust
-ui.window(im_str!("Hello world"))
+Window::new(im_str!("Hello world"))
     .size([300.0, 100.0], Condition::FirstUseEver)
-    .build(|| {
+    .build(&ui, || {
         ui.text(im_str!("Hello world!"));
         ui.text(im_str!("こんにちは世界！"));
         ui.text(im_str!("This...is...imgui-rs!"));
         ui.separator();
         let mouse_pos = ui.io().mouse_pos;
-        ui.text(im_str!("Mouse Position: ({:.1},{:.1})", mouse_pos[0], mouse_pos[1]));
-    })
+        ui.text(format!(
+            "Mouse Position: ({:.1},{:.1})",
+            mouse_pos[0], mouse_pos[1]
+        ));
+    });
 ```
 
 ## Main library crates