Base class used when implementing a control which draws the background. CQikBackgroundDecorator is used as a base class when implementing
a control which draws the background. A parent class can inherit from this class to be able to take responsibillity of drawing a child controls background.
The Draw() method is pure virtual so it must be implemented by the specific background drawer.
This should be used if you want your control to follow the default application background.
This can be used when you want to have a skinned background.
If you want a bitmap background use this class.