http://www.tcl.tk/man/tcl8.5/TkCmd/ttk_treeview.htm

This is the treeview widget of the Tile widget set. The treeview widget is intended to provide something that's a little more powerful (and faster) than the BWidget::Tree widget, and a little bit simpler to use (though less powerful) than the TkTreeCtrl widget.

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The screenshot below shows the treeview as part of a larger program (using the clam theme). There is a header and 6 entries (where two are one level down).

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The basics of this widget are:

 package require tile
 tile::setTheme clam
 # create it:
 ttk::treeview .tree
 pack .tree -expand 1 -fill both
 # insert an entry at the root level:
 set entry1 [.tree insert {} end -text "first item"]
 # and a second one:
 set entry2 [.tree insert {} end -text "second item"]
 # insert a new level with entry1 as parent:
 .tree insert $entry1 end -text "a sublevel"
 # insert another item under this one:
 .tree insert $entry1 end -text "another item"
 # suppose, one item is selected.
 # we can then delete it thus:
 .tree delete [.tree selection]

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BAS

 # Also, to add the heading:
 .tree heading #0 -text Features
 # I also like the heading a little closer to the frame
 .tree configure -padding {0 0 0 0}

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SLB For an example of how to implement sorting in treeview see Tile Table

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Sarnold uses a BWidget Tree in which some data is associated with each entry. ttk::treeview does not seem - to my great surprise - to handle other data than the text. Is it true ? Is adding such a feature planned ?

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JH I found the old-school border style of treeview on xpnative to be unsatisfactory. Pat pointed out this helpful alternative layout:

    ttk::style layout Treeview {
      Entry.field -sticky news -border 2 -children {
        Treeview.padding -sticky news -children {
            Treeview.treearea -sticky news
        }
      }
    }

You can remove the Entry.field outer part to have purely no border as well. This is good when wrapping it in something like widget::scrolledwindow.

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MAKR 2009-05-22: Inplace edit in ttk::treeview is another example, how to use this widget.

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