I think a way to handle the desire to have each cell bound to specific
activities {to make it more excel like) might be to create an embedded  text
widget in the active cell that has a unique tag to which all the cell
specific bindings are bound  - this gives a place to write the bindings that
are unique to the table cells.  Destroy the embedded widget - and create
another when the active cell changes.  -- The appearance is of all the cells
being bound.    It's a fair bit of work to get excel like tables, and
becomes more interesting as you look at cell or row/column multi-selection
and cut and paste functionality -- and cross platform behavior issues,
Again -- there will be some performance issues, but this might be an
improvement over creating an embedded text widget in every cell..

Shawn
  -----Original Message-----
  From: tktable-users-admin@[...].net
[mailto:tktable-users-admin@[...].net]On Behalf Of Gregory
Pierce
  Sent: Thursday, March 11, 2004 6:39 AM
  To: Jeff Hobbs; tktable-users@[...].net
  Subject: Re: [Tktable] Support for bindings


  Hi Jeff,

  Jeff Hobbs wrote:

Is there any planned support for adding bindings to
individual cells?

What can't you already do through the global bindings and the
commands that tell you the current cell?
  I do see your point. I was thinking that you needed to have a binding for
each cell. However,
  I think I can accomplish what I want through a global binding and the
commands you mention.


  Also, is there any plan to have each cell
have the same functionality as a text widget (bindings,
selection etc...). This would be a great

It may be great, but you are just better off embedded a text
widget there if you really need one.  That's a huge effort
that I don't see ever being done due to the complexity
involved (when just embedding a widget works too).
  I tried the text widget in each cell and it does have an effect on
performance. The other
  downside (which may have a workaround) is when you select a region of
cells when
  -selectionmode extended there's no indication that the cells are in a
selected region
  (background color doesn't change). I have to admit that I didn't play
around with all the
  options available to see if I can't get this to work. Is there a way to
have the text widget
  not cover up the column and row separators? Also, is there a way to have
the column and
  row separators turn a darker color (highlighted) when they are selected?

  Basically, my overall goal is to duplicate some of the basic features that
MS Excel has. For example,
  the way a region of cells appears when they are selected, double clicking
in order to edit a cell etc...

  Thanks for you help,

  Greg


  Jeff Hobbs, The Tcl Guy
  http://www.ActiveState.com/, a division of Sophos



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