IlvAbstractBar is an abstract class for managing the size and position of menu bar or toolbar items. See Using IlvAbstractMenu and Using IlvMenuItem.

This section covers these topics:

You can specify the orientation of the bar with the member function setOrientation and retrieve it with getOrientation.

The bar can be vertical, in which case menu items are arranged from top to bottom, or it can be horizontal, in which case items are arranged from left to right.

You can constrain the bar geometry so that all its items are visible whatever its size with the member function setConstraintMode. When this member function is set to IlTrue, the bar is automatically resized to accommodate all its items. Items can be extended to several lines if necessary. To know whether the constraint mode is on, call useConstraintMode.

When the constraint mode is on, the virtual member function geometryChanged is called if:

You can set a default size for all the items in a bar with the member function setDefaultItemSize and retrieve it with getDefaultItemSize. You can specify the spacing between two items in a bar with setSpacing and retrieve it with getSpacing.

You can align the last item in a bar with its right border with the member function setFlushingRight. Help menus, for example, are flush-right most of the time.

You can dock and undock abstract bar objects. See Using Docking Bars.