diff -r 5d71a36b833b -r ad5c74af14c4 ui/winui/toolkit.cpp
--- a/ui/winui/toolkit.cpp	Thu Oct 12 13:52:18 2023 +0200
+++ b/ui/winui/toolkit.cpp	Thu Oct 12 14:09:04 2023 +0200
@@ -108,12 +108,21 @@
 	delete widget;
 }
 
+extern "C" void destroy_ui_container_wrapper(void* ptr) {
+	UiContainer* ctn = (UiContainer*)ptr;
+	delete ctn;
+}
+
 void ui_context_add_window_destructor(UiContext* ctx, UiWindow* win) {
-	// TODO:
+	cxMempoolRegister(ctx->mp, win, destroy_ui_window_wrapper);
 }
 
 void ui_context_add_widget_destructor(UiContext* ctx, UiWidget* widget) {
-	// TODO:
+	cxMempoolRegister(ctx->mp, widget, destroy_ui_widget_wrapper);
+}
+
+void ui_context_add_container_destructor(UiContext* ctx, UiContainer *container) {
+	cxMempoolRegister(ctx->mp, container, destroy_ui_container_wrapper);
 }