class TGHeaderFrame: public TGHorizontalFrame

TGFrame, TGCompositeFrame, TGVerticalFrame, TGHorizontalFrame,
TGMainFrame, TGTransientFrame and TGGroupFrame

The frame classes describe the different "dressed" GUI windows.

The TGFrame class is a subclasses of TGWindow, and is used as base
class for some simple widgets (buttons, labels, etc.).
It provides:
- position & dimension fields
- an 'options' attribute (see constant above)
- a generic event handler
- a generic layout mechanism
- a generic border

The TGCompositeFrame class is the base class for composite widgets
(menu bars, list boxes, etc.).
It provides:
- a layout manager
- a frame container (TList *)

The TGVerticalFrame and TGHorizontalFrame are composite frame that
layout their children in vertical or horizontal way.

The TGMainFrame class defines top level windows that interact with
the system Window Manager.

The TGTransientFrame class defines transient windows that typically
are used for dialogs windows.

The TGGroupFrame is a composite frame with a border and a title.
It is typically used to group a number of logically related widgets
visually together.