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I have a application which uses a JTree. For each node in the tree, there is a checkbox attached to the node using a customized TreeCellRenderer. When some items of a node are selected i.e not all children of a node are selected using the chechboxes, how do i indicate using the checkbox of the parent node that only a partial list of nodes is selected. For this, i need to draw a little square in the checkbox indicating that it is partially selected.
You can use e.g.
http://www.roseindia.net/javatutorials/tristatecheckbox.shtml or
http://www.javaspecialists.co.za/archive/Issue082.html