The entire screen, analogous to the desktop, is covered by the root window , which cannot be removed. Other windows appear within the root window and are known as its children. Every window except the root window has a parent. Windows that have the same parent are considered siblings. Primary windows Secondary windows Menu windows Primary windows organize the contents of the application.
Primary windows serve as parent windows for other windows in an application.
They are usually children of the root window. Motif applications use secondary windows for conveying information to or requesting information from the user. A secondary window always has a parent window, either a primary window or another secondary window. Menu windows, or simply Menus , display temporary lists of choices. A menu window always relates to a parent window, either a primary window, a secondary window, or another menu.