3/11/91

Objects: have inputs and outputs
 	can be graphical or not

	both have a graphical representation in the work area

Widgets as objects:

	inputs: through set values or exported functions

	output: through callbacks (what about actions - I think not)

	How to program input/output for a widget ?


	Is Object a subclass of a widget, or
	is object a base class	and it's subclassed for for each
	purpose and it has a widget pointer (both ?)

	how to create an object/widget : through widget selector, or
	object selector ? >> widget selector


	is each widget an object ? (menus, commands) - no, the
	containers (form, shell etc,) are not

	how is the graphical representation attached to it (through object)


inpute/outputs -> data types
	float
	integer
	Boolean
	string

	enums

special data: clock tick and objects: clock and counter

control objects:
	ifelse
	case

	const

	
How to handle time ?

generating an output is up to the object's semantics, e.g. an object
can decide if an output has to be generated if it doesn't change.

design of the widget selector ?

data converters : always attempt to convert, maybe ask the user when
she is making the connection, and the data types differ

three windows:
	1. work space (+ object selector)
	2. widget space ( + widget selector + widget editor)
	3. application window(s)


xt++ to do:

a constructor accepting several resource pairs  ???
	(cannot do varargs, this would require C file for each widget
	we want the macro)

implement Args class, and modify the constructors

implement LayoutSpace class, as a base class for ObjectEditor: it
would handle any objects, by registering actions through the
accelarators

implement a general purpose Dialog class with keyword based type:
InformationDialog, UserInputDialog, YesOrNo Dialog, etc.