I'm looking for a framework for a project. A main feature will be the selection of some fields (like textfields or comboboxes or checkboxes) with the mouse. The new examples contain the possibility to draw within GXT. Is it possible with the new 3.x version to draw a half-transparent square (or a rectangle with a dotted border) over some field elements and to get the selected objects? A simple example I have written in Java Swing: https://www.phosco.info/builder.jnlp

Thanks a lot