How can I make an ultra tree node expand on a single mouse click? I know there's a double mouse click action to toggle the expansion, but I can't see the same for a single mouse click. I've tried using the mouse click event and getting the node under the mouse; this worked apart from the event was also fired when you click on the expansion indicator. I want to keep the expansion indicator so I guess I either need a way to disable the built in expansionIndicator.click, or figure out whether the user clicked on the actual node or the expansion indicator.
I'm also wondering the same thing, and since it's been almost two years, I thought I'd ask: is there a built-in feature now that allows you to expand nodes on a single click? I'm using the 2010.2 bundle. Thanks.
Thanks! I'll give it a go. I was hoping there would be a built-in (or at least less complicated!) way of doing it :)
private void ultraTree1_MouseDown(object sender, MouseEventArgs e){ UltraTree treeControl = sender as UltraTree; UltraTreeUIElement controlElement = treeControl.UIElement; UIElement elementAtPoint = controlElement != null ? controlElement.ElementFromPoint( e.Location ) : null;
bool isOverExpansionIndicator = false; UltraTreeNode nodeAtPoint = elementAtPoint != null ? elementAtPoint.GetContext( typeof(UltraTreeNode) ) as UltraTreeNode : null;
if ( nodeAtPoint != null ) { while ( elementAtPoint != null ) { if ( elementAtPoint is Infragistics.Win.UltraWinTree.ExpansionIndicatorUIElement ) { isOverExpansionIndicator = true; break; }
elementAtPoint = elementAtPoint.Parent; }
if ( isOverExpansionIndicator == false ) nodeAtPoint.Expanded = ! nodeAtPoint.Expanded; }}