Manual page:
   * http://tcllib.sourceforge.net/BWman/Tree.html

Examples on use of BWidget::Tree:
   * [Tree nodes in motion]
   * [Display a graph in a BWidget Tree]
   * [LemonTree]
   * [starDOM]

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[TR] - The '''Tree''' has no default binding for the selection of ranges. This is usually done by selectiong a node and then selecting another while pressing down the ''Shift'' key. This proc will do the work:


 proc TreeSelectRange {tree node} {
	#
	# add a continuous range of nodes to an existing selection
	#
	# tree -> path to the BWidget tree
	# node -> the node that has been clicked on
	#
	
	# remember current selection:
	set sel [$tree selection get]
	# get last selected node:
	set last [lindex $sel end]
	# select the requested range:
	$tree selection range $last $node
	# add the remembered nodes:
	foreach node $sel {$tree selection add $node}
 }

Then you just need something like
 $tree bindText <Shift-Button-1> [list TreeSelectRange %W]
to make the binding work.




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[Category Widget], part of the [Bwidget] extension.