

Ybuild is an interactive widget class creation tool.

The central rectangle represents the widget window. you
can resize this window by dragging its border.

You can also draw in this window to define the class layout.
Click on one of the tools in the tool box and then use the

    - left button         to resize objects, 
    - middle button       to move selected objects
    - right button        to remove objects

You can also use the commands of the "Edit" menu.


Using the "Class" menu commands you can change the class 
definition: 
     - create class attributes
     - insert sub_widegts and change their attributes
     - define a behaviour

With the "Control" commands you can save the class definition
as a Prolog code file that you can edit afterwards to include,
for instance, callbacks.


