--- a/ui/winui/window.cpp Wed Feb 07 17:10:01 2024 +0100 +++ b/ui/winui/window.cpp Thu Feb 08 10:22:58 2024 +0100 @@ -171,7 +171,17 @@ ui_context_add_window_destructor(obj->ctx, obj->wobj); window.Closed([obj](IInspectable const& sender, WindowEventArgs) { - cxMempoolDestroy(obj->ctx->mp); + if (obj->ctx->close_callback) { + UiEvent evt; + evt.obj = obj; + evt.document = obj->ctx->document; + evt.window = obj->window; + evt.eventdata = NULL; + evt.intval = 0; + obj->ctx->close_callback(&evt, obj->ctx->close_data); + } else { + ui_context_destroy(obj->ctx); + } }); obj->container = new UiBoxContainer(grid, UI_BOX_CONTAINER_VBOX, 0, 0);