Internal classes.

These classes are used internally for managing various aspects of the GUI system.

Normal classes:

ManagerC	GUI Manager class
WidgetC	Base Widget handle.
MouseEventC	Mouse event information.
CListEventC	Print description of mouse event to stream.
ContainerWidgetC	Container Widget
OneChildC	Base class for all widgets with exactly one child.

Normal functions:

operator <<(ostream &,const MouseEventC &)

Print description of mouse event to stream.

Advanced classes:

GTKSignalInfoC

Signal info