Class Window.windowSource

A window is a Layers.layers widget, interfacing with SDL window to render and handle events. Windows should not be created directly but through App.create_window, App.create_scrolled_window and App.popup_menu so that events are propagated to them. Even though a window is a specialized Layers.layers widget, only the first layer should be used by application's code, through the #set_child and #remove_child methods of window. Additional layers are used internally for features like inpsecting.