--- a/ui/win32/toolkit.c Sun Dec 07 10:02:27 2025 +0100 +++ b/ui/win32/toolkit.c Sun Dec 07 10:41:04 2025 +0100 @@ -161,7 +161,7 @@ case WM_SIZE: { int width = LOWORD(lParam); int height = HIWORD(lParam); - if (widget->layout) { + if (widget && widget->layout) { widget->layout(widget->layoutmanager, width, height); } break;