GTklos is the name of the OO model used for GUI programming GUIs in STklos. This model is very similar to the one originally defined in STk. This model is described in the JFP and ISOTAS papers. This is the model actually used for STklos GTK1 support.
A port of GTklos on GTK2 is a work in progress. Send me a mail if you are interested in testing it.
