http://sf.net/projects/incrtcl/ is where the CVS for iwidgets
is maintained.

iwidgets (aka [incr Widgets]) is a set of megawidgets based on [incr tcl] and [incr tk].

In the early life of itcl/itk/iwidgets, they were all three distributed
in the same source tar file.

During 2001, a [TIP] was submitted proposing that the incr tcl be included
as an extension distributed with Tcl.

If/when this proposal is implemented, users will need to download the
tcl, tk, itk, and iwidgets tar files to get the pieces to use iwidgets.

See [incr Widgets] for a list of the widgets included in the set.
[[What do we do about the cases below which overlap with widgets that
already existed in Tk, etc.?]]  In the case of overlap, just update
the associated page with info about each of the items, and the extension with which it is associated.

This package is part of the [ActiveTcl] Batteries Included distribution.
----
[LV] Has anyone any experience using iwidgets with Tcl/Tk 8.5? I have gotten a report that widgets that used to be grey are now white and that the buttonplacement configuration parameter appears to be ignored for the distjointlistbox widget.

Here's a code example:
===
# ----------------------------------------------------------------------
#  DEMO: disjointlistbox in [incr Widgets]
# ----------------------------------------------------------------------
package require Iwidgets 4.0

iwidgets::disjointlistbox .dlb -buttonplacement center -lhslabeltext "Left Side" -rhslabeltext "Right Side"
pack .dlb -padx 10 -pady 10 -fill both -expand yes 

.dlb insertlhs {black white red blue yellow green magenta}
===

Run this code with a Tcl/Tk 8.4 system and iwidgets. The "left side" and "right side" buttons appear about the middle of the two listboxes. However, when I run this code with a Tcl/Tk 8.5 system (this is on SPARC Solaris), the left and right side buttons are aligned with the top of the two listboxes.

[DKF]: Since you need a new build of iwidgets with 8.5 anyway (because of forced changes to [itcl] due to [Radical reform of the execution engine%|%VarReform%|%]) this should really be regarded as being a regression/bug in iwdgets itself. (Yes, I've got no idea what's wrong...)

[LV] That's certainly where I started. I suspect, regardless of the [Tk] change that caused the behavior, you are right - there should be something in the test suite to test such a thing. I suspect the test suite has various things missing.

In the comp.lang.tcl thread leading to Tk but ticket 2062394, I think the reporter indicates the Tk behavior that led to this has to do with a change in the default gravity behavior of grid that is being used in the widget. But I may be wrong. And I have no idea if the change was intentional or not...

----
In comp.lang.tcl, Uwe writes about what appears to be the cause of this [http://groups.google.com/group/comp.lang.tcl/browse_thread/thread/86590035a1030c71#] - a change in the default behavior Tk 8.5's [grid] command. He has filed a trouble ticket on the Tk issue (ticket 2062394) as well as posted this work around for iwidget's disjointlistbox to be used in the meantime.

===

Here is a patch for disjointlistbox:
<patch>
*** pkg/iwidgets4.0.2/scripts/disjointlistbox.itk       Tue Aug 12
11:56:03
2003
--- new/iwidgets4.0.2/scripts/disjointlistbox.itk       Wed Aug 20
16:47:34
2008
***************
*** 462,467 ****
--- 462,470 ----
                  grid configure $itk_component(bbox) \
                          -in $itk_interior -row 0 -column 1 - columnspan 1 \
                                  -sticky nsew
+                 # Tk8.5: enforce compatibility to previous versions
+                 # see Tk-ticket 2062394
+                 catch {grid anchor $itk_component(bbox) center}

                  grid configure $itk_component(rhsbutton) \
                          -in $itk_component(bbox) -row 0 -column 0 - sticky ew 
</patch> 
===
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[Learning Iwidgets]

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!!!!!!
%| [Category Package] | [Category Object Orientation] | [Category Widget] | [Category Itcl] |%
!!!!!!