Set the layer visibility to false will also uncheck the node. 
Perhaps it depends on how you built your tree...




"Valiquette,Francois [Montreal]" <francois.valique...@ec.gc.ca>@geoext.org 

Envoyé par : users-boun...@geoext.org
2013-03-20 09:21

A
<chamme.ch...@gmail.com>, <users@geoext.org>
cc

Objet
Re: [Users] How to turn on/off a radio button in a layer tree 
nodeprogrammatically?








Hello,
 
To check or uncheck the node ?i? of your tree you can use something 
similar to this :
 
layerTreeRoot.childNodes[i].ui.toggleCheck(false)
or 
layerTreeRoot.childNodes[i].ui.toggleCheck(true)
 
And for the radio button I don?t know but I think it should be something 
similar.
 
Good luck
 
François
 
 
De : users-boun...@geoext.org [mailto:users-boun...@geoext.org] De la part 
de ??
Envoyé : 20 mars 2013 02:26
À : users@geoext.org
Objet : [Users] How to turn on/off a radio button in a layer tree 
nodeprogrammatically?
 
Hello everyone:
 
I am learning GeoExt and trying the example "Tree Node", the url of the 
example is "http://api.geoext.org/1.1/examples/tree.html";.
 
In the example, the "Overlays" subtree hosted in the Layers panel contains 
3 layer nodes each with a check box and a radio button, users can click on 
one of radio buttons to activate a layer, and through checking on/off 
check boxes, we can turn on/off the display of a layer. These functions 
are excellent.
 
Now the question is, I want to turn on/off a radio button in the treenode 
programmatically, also check on/off check boxs programmatically. Could 
anyone provide me some hints to achieve the goal? Do I need to examine 
some source code of the library?
 
Thanks,
Chamme_______________________________________________
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