--- a/ui/win32/button.c Wed Oct 08 10:41:35 2025 +0200 +++ b/ui/win32/button.c Wed Oct 08 12:36:16 2025 +0200 @@ -52,7 +52,7 @@ hInstance, NULL); - W32Widget *widget = w32_widget_create(&button_widget_class, hwnd, sizeof(W32Button)); + W32Widget *widget = w32_widget_create(&button_widget_class, hwnd, sizeof(UiButton)); ui_container_add(container, widget, &layout); return widget;