Posted by Marcel on Apr 03, 2019; 12:49pm
URL: https://forum.jogamp.org/NewtCanvasSWT-Linux-Exception-with-GTK-VERSION-tp4039442p4039664.html

In 4.11 only GTK3 is supported. They dropped GTK2 support in 4.10, see:

https://www.eclipse.org/eclipse/news/4.10/platform.php#gtk2-removal

I still get the handle error when I start the RCP from within Eclipse. Exported as a RCP product  I do not get any handle errors.