B

base class

The class at the root of a class hierarchy; all other classes in the hierarchy inherit their properties and methods from this class. In GObject, the base class is named GObject.

bitmap

1. In general (not quite correct), any arbitrary raster (consisting of pixels) image; a rectangular two-dimensional array of pixels. 2. In the X Window System, a special image format called XBM with a one-bit depth (black and white), used now primarily for masks on color images.

Bonobo

The GNOME component object model. An open specification for an object model and the name for its GTK+ -based reference implementation. Bonobo is based on CORBA and draws strongly from Microsoft's OLE. The main purpose of Bonobo is to embed content (documents, or rather, components or controls ) into other content (documents or applications).