Hi! After having discussed yesterday with Yuriy, I gave a try at having multiple selection in Roassal. If you update Roassal, you can try: -=-=-=-=-=-=-=-=-=-=-=-= b := RTMondrian new. b nodes: Collection withAllSubclasses. b layout flow. b normalizer normalizeSize: #numberOfMethods. b build. "Adding a label" labelShape := RTLabel new text: 'Nothing selected'. label := labelShape element. b view add: label. TRConstraint move: label below: b view elements. "Changing the label according to the selection" b view elements @ (RTSelectable new selectionCallback: [ :es | label trachelShape text: es size asString, ' selected elements']). b view -=-=-=-=-=-=-=-=-=-=-=-= Try clicking on the square and the white background. Wouldn’t it be nice to connect this with GTInspector? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. _______________________________________________ Moose-dev mailing list Moose-dev(a)iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev