rowheight.html

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  <h3>
    e1030.  
    Setting the Row Height of a JTree Component</h3>

The tree component's row height property controls the height of
every displayed node. If the row height is greater than 0, all rows
will given the specified height.  However, if the rows can be of
differing heights, it is necessary to set the row height to 0. With a
0 row height, all heights of all rows are computed individually.


<pre>
    // Create tree
    JTree tree = new JTree();
    
    // All rows will be given 15 pixels of height
    tree.setRowHeight(<font color="#0066ff"><i>15</i></font>);
    
    // Have the row height for each row computed individually
    tree.setRowHeight(0);
    
    // If the row height is 0 and the height of a row has dynamically
    // changed, it is necessary to flush the internal cache of row
    // heights. The following calls flush the internal cache.
    if (tree.getRowHeight() &lt;= 0) {
        // Temporary change to non-zero height
        tree.setRowHeight(1);
    }
    tree.setRowHeight(0);
</pre>
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        See also: 
<a class="eglink" href="/egs/javax.swing.tree/pkg.html?l=rel#Events">
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    Node Expansion
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<a class="eglink" href="/egs/javax.swing.tree/pkg.html?l=rel#Nodes">
    Nodes
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<a class="eglink" href="/egs/javax.swing.tree/pkg.html?l=rel#Selections">
    Selections
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