I have an application that uses a widget_tree that has many branches (folders). When the widget_tree is being built, it causes a lot of flickering as it updates. Is there a way to stop or delay the display until it is built so that it does not flicker? Answer: Yes, you can use the UPDATE keyword to WIDGET_CONTROL: http://www.exelisvis.com/docs/widget_... You can disable on-screen widget updates (e.g.: WIDGET_CONTROL, id, UPDATE=0) and then re-enable updates (...UPDATE=1) after making a changes to the widget hierarchy.