Tcl vs. Python or Re: Question: event.widget, event.type

[Jonadab the Unsightly One]

Chuck Meyers <chuck.meyers at lmco.com> wrote:

> I want to add a context sensative HELP to my GUIs. One way to do
> this is to generate a binding to all widgets that calls a HELP procedure
> passing the calling widget name. In Tcl you have the %W variable to pass
> as a parameter, thus you only need to add a few lines of code and all
> widgets have HELP. You need to maintain the procedure that gets called,
> but when making widgets you can ignore the fact that HELP exists. 

Philosophically, if HELP is to be truly context-sensitive, it
makes more sense IMO for each individual widget to provide its
own HELP method (or object; exactly how you implement this is
not as important as the notion of making it item-specific).  
This will mean a lot more information in the help feature than 
most users are accustomed to being able to get, but that's a 
Good Thing(TM).

> Another Tcl advantage is the naming convention. The %W name tells you the
> parents name, so if help is not available for the widget, you could search
> for help for the parent widget.

That does make sense, to some degree at least.


- jonadab