The OnPaintBackground method enables derived classes to handle Windows background erase requests.
Notes to Inheritors
Inheriting classes should override this method to handle the erase background request from windows. When overriding OnPaintBackground in a derived class it is not necessary to call the base class's OnPaintBackground.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2