<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 10pt; color: #330099'><span>Hello GeoExt list,<br><br>I'd like to make a custom layer tree with these requirements :<br> * layer A0 is the parent of layer A1<br> * if layer A1 is checked, layer A0 is also activated<br> * if layer A1 is unchecked, nothing happens to A0<br> * if layer A0 is checked, nothing happens to A1<br> * if layer A0 is unchecked, layer A1 is also deactivated.<br> * same behaviour for other pairs of layers {B0, B1}, {C0, C1}, ...<br>In other words, the layer X1 is only visible if the layer X0 is also visible<br><br>I thought I saw something like this in the mapfish examples but I can't access them anymore ("not found" when clicking the links in http://dev.mapfish.org/sandbox/website/.build/html/examples.html).<br><br>Does this behaviour already exist in GeoExt maybe ?<br><br><span name="x"></span></span>Have a nice day,<br><br>Alain<br></div></body></html>