diff --git a/Readme.md b/Readme.md
index a87a2aa..28b671d 100644
--- a/Readme.md
+++ b/Readme.md
@@ -35,7 +35,7 @@ Summary: It is only responsible for the actual user interface
 
 ## Example
 ```c
-/* allocate memory to hold the draw calls output */
+/* allocate memory to hold the draw commands */
 gui_command_buffer buffer;
 void *memory = malloc(MEMORY_SIZE)
 gui_command_buffer_init_fixed(buffer, memory, MEMORY_SIZE);
@@ -327,7 +327,7 @@ gui_panel_init(&panel, 0, 0, 0, 0, 0, &config, &buffer);
 
 struct gui_layout tiled;
 struct gui_layout_config ratio = {...};
-gui_layout_init(&tiled, &ratio);
+gui_layout_init(&tiled, &ratio, window_width, window_height);
 gui_layout_slot(&tiled, GUI_SLOT_LEFT, GUI_LAYOUT_VERTICAL, 1);
 
 while (1) {
diff --git a/demo/demo.c b/demo/demo.c
index af1f0a5..6cad8a1 100644
--- a/demo/demo.c
+++ b/demo/demo.c
@@ -376,9 +376,8 @@ run_demo(struct demo_gui *gui, struct gui_input *input)
 {
     struct control_window *control = &gui->control;
     struct show_window *show = &gui->show;
-    gui->running = update_control(control, &gui->stack, input, &gui->config);
 
-    /* Show window */
+    gui->running = update_control(control, &gui->stack, input, &gui->config);
     show->hook.flags = control->show_flags;
     update_show(show, &gui->stack, input);
     if (show->hook.flags & GUI_PANEL_HIDDEN)
diff --git a/gui.c b/gui.c
index fa721f4..7be6d4b 100644
--- a/gui.c
+++ b/gui.c
@@ -3019,7 +3019,8 @@ gui_stack_pop(struct gui_stack *stack, struct gui_panel*panel)
  * ===============================================================
  */
 void
-gui_layout_init(struct gui_layout *layout, const struct gui_layout_config *config)
+gui_layout_init(struct gui_layout *layout, const struct gui_layout_config *config,
+    gui_size width, gui_size height)
 {
     gui_float left, right;
     gui_float centerh, centerv;
@@ -3030,6 +3031,8 @@ gui_layout_init(struct gui_layout *layout, const struct gui_layout_config *confi
     if (!layout || !config) return;
     zero(layout, sizeof(*layout));
     layout->state = GUI_LAYOUT_ACTIVE;
+    layout->width = width;
+    layout->height = height;
 
     left = SATURATE(config->left);
     right = SATURATE(config->right);
@@ -3051,6 +3054,15 @@ gui_layout_init(struct gui_layout *layout, const struct gui_layout_config *confi
     vec2_load(layout->slots[GUI_SLOT_RIGHT].offset, left + centerh, top);
 }
 
+void
+gui_layout_set_size(struct gui_layout *layout, gui_size width, gui_size height)
+{
+    ASSERT(layout);
+    if (!layout) return;
+    layout->width = width;
+    layout->height = height;
+}
+
 void
 gui_layout_slot(struct gui_layout *layout, enum gui_layout_slot_index slot,
     enum gui_layout_format format, gui_size count)
diff --git a/gui.h b/gui.h
index f658112..afafade 100644
--- a/gui.h
+++ b/gui.h
@@ -669,7 +669,7 @@ void gui_stack_pop(struct gui_stack*, struct gui_panel*);
 /*
  * ==============================================================
  *
- *                          Border Layout
+ *                          Layout
  *
  * ===============================================================
  */
@@ -716,7 +716,9 @@ struct gui_layout {
     struct gui_layout_slot slots[GUI_SLOT_MAX];
 };
 
-void gui_layout_init(struct gui_layout*, const struct gui_layout_config*);
+void gui_layout_init(struct gui_layout*, const struct gui_layout_config*,
+                    gui_size width, gui_size height);
+void gui_layout_set_size(struct gui_layout*, gui_size width, gui_size height);
 void gui_layout_slot(struct gui_layout*, enum gui_layout_slot_index,
                     enum gui_layout_format, gui_size panel_count);