Create and display a list of items, one per line.

http://www.purl.org/tcl/home/man/tcl8.4/TkCmd/listbox.htm


Often someone asks how to get a listbox to take more than one
selection and people recommend they read the above reference page's
information on ''-exportselection 0'' . '''CJU:''' Normally, if you have
more than one listbox on the screen, selecting one listbox automatically
unselects any previous selections in the all of the others. ''-exportselection 0''
is a way of getting around that at the cost of not being able to export
the list element(s) to the X selection. 
I understand the reasoning for this behavior, but I
think the default for ''-exportselection'' should be 0 instead
of 1 for the listbox simply due to the confusion it can cause
for newcomers of Tk and also the relative rarity of the need to
copy from a listbox as opposed to a text or entry widget,
for example.
Often someone asks how to get a listbox to take more than one selection and
''[MGS]'' - Note: selection is not the same as the clipboard. See: [selection]
''CJU'' - Corrected it.
[MGS]: Note: selection is not the same as the clipboard. See: [selection]

[Tk]'s venerable [FAQ] covers several
aspects of listbox management which are, in fact, frequently-asked.  Among
these are synchronization between parallel listboxes, multi-selection, 
... [http://tcl.sf.net/faqs/tk/#listbox].  Also, note that people who start
with listboxes often want to move to [combobox]es, [wcb], 
[multicolumn listbox]es, [hugecombo], ...


   * [Listbox navigation by keyboard]
   * [A little list selector]: two listboxes for selecting a subset
   * [Multicolumn listbox]

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