:class:`UIMessageWindow <pygame_gui.windows.UIMessageWindow>` is a UIWindow with the object id of '#message_window'.
As a UIWindow the Message Window has all the theming parameters of the UIWindow, which you can read more about here :ref:`theme-window`.
As well as the sub-elements of the UIWindow (title bar and close button) which you can read about here :ref:`theme-window`, the message window has the following sub element IDs -
UIButtons:
- '#message_window.#dismiss_button'
UITextBox:
- '#message_window.text_box'
You can find out more about theming buttons here: :ref:`theme-button` and text boxes here: :ref:`theme-text-box`.