Hi Marco,

you can use WTreeView::expandToDepth() and pass your maximum depths for
expanding all nodes... This method works reliable for my purposes. To
collapse all visible nodes again you can collapse only the top-level nodes.

Regards,
Stefan

Am 05.09.2014 19:13, schrieb Marco Kinski:
> Hi List,
> 
> i need to expand/collapse nodes on a large tree.
> 
> After toggling the tree for about 5 times the browser gets out of sync
> and shows the loading picture instead of the elements. If this happens
> the application sometimes asserts (in WTreeView.C:2393) on scrolling.
> 
> What I am doing wrong?
> 
> Example code: http://pastebin.com/tPM0Sz9e
> WT-Version: 3.3.3
> 
> -- 
> Regards,
> Marco
> 
> 
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