allocation The final size of a widget within its parent. For example, a widget may request a minimum size of 20×20 pixels, but its parent may decide to allocate 50×20 pixels for it instead. requisition bin A container that can hold at most one child widget. The base class for bins is GtkBin. container child A container's child is a widget contained inside it. column FIXME model column view column container A widget that contains other widgets; in that case, the container is the parent of the child widgets. Some containers don't draw anything on their own, but rather just organize their children's geometry; for example, GtkVBox lays out its children vertically without painting anything on its own. Other containers include decorative elements; for example, GtkFrame contains the frame's child and a label in addition to the shaded frame it draws. The base class for containers is GtkContainer. widget geometry display FIXME event FIXME geometry A widget's position and size. Within its parent, this is called the widget's allocation. mapping FIXME model column FIXME parent A widget's parent is the container inside which it resides. realization FIXME requisition The size requisition of a widget is the minimum amount of space it requests from its parent. Once the parent computes the widget's final size, it gives it its size allocation. allocation screen FIXME style FIXME toplevel A widget that does not require a parent container. The only toplevel widget in GTK+ is GtkWindow. container unmap mapping unrealize realization view column FIXME widget A control in a graphical user interface. Widgets can draw themselves and process events from the mouse and keyboard. Widget types include buttons, menus, text entry lines, and lists. Widgets can be arranged into containers, and these take care of assigning the geometry of the widgets: every widget thus has a parent except those widgets which are toplevels. The base class for widgets is GtkWidget. container