
WindowBuilder does not recognize the GUI toolkit or library used in this class. This class is not an editable UI class and contains no UI components. This can be caused by one of the following reasons: The parser parsed the compilation unit, but can't identify any GUI toolkit, so WindowBuilder can't display any GUI to edit.


However, even after importing WindowBuilder into my project, extending Composite and doing what is shown in the first part of the official tutorial, I receive an error stating: In doing so I came across WindowBuilder, and decided to add it to a project I had already built and currently works through User Input from the console (a Twitch Bot that makes use of the pIRCbot library). In my studies I have been just instructed about Swing and the Java GUI managment only very briefly, so I decided to take the matter into my own hands and trying to figure out how to build a good looking GUI using Java.
