Tab art provider code - a tab provider provides all drawing functionality to the AuiNotebook. This allows the AuiNotebook to have a plugable look-and-feel.
By default, a AuiNotebook uses an instance of this class called AuiDefaultTabArt which provides bitmap art and a colour scheme that is adapted to the major platforms’ look. You can either derive from that class to alter its behaviour or write a completely new tab art class. Call AuiNotebook.SetArtProvider to make use this new tab art.