| Bitmap | Graphics.UI.GIO, Graphics.UI.GIO.Types |
| BitmapHandle | Graphics.UI.GIO, Graphics.UI.GIO.Types |
| Button | Graphics.UI.GIO, Graphics.UI.GIO.Controls |
| beside | Graphics.UI.GIO, Graphics.UI.GIO.Layout |
| bgcolor | Graphics.UI.GIO, Graphics.UI.GIO.Attributes |
| bkDrawMode | Graphics.UI.GIO, Graphics.UI.GIO.Attributes |
| bottomLeft | Graphics.UI.GIO, Graphics.UI.GIO.Types |
| bottomRight | Graphics.UI.GIO, Graphics.UI.GIO.Types |
| bottompad | Graphics.UI.GIO, Graphics.UI.GIO.Layout |
| bounded | Graphics.UI.GIO, Graphics.UI.GIO.Types |
| bufferMode | Graphics.UI.GIO, Graphics.UI.GIO.Attributes |
| button | Graphics.UI.GIO, Graphics.UI.GIO.Controls |