COBOL & GUI.
Strange as it may seem, there is already at several dialects of COBOL that do handle GUI type code. they are mostly marketed by small firms trying to pick off some of the low hanging fruit on Windows & Linux systems.
They recognize that COBOL succeeded remarkably well in one of Grace Hopper's most important design criteria: COBOL code is Very Easy to read and understand and has one of the shortest learning periods of any computer language for native English speakers.
That's a large part of WHY most Univeersities don't want to teach it any more. Publish or Perish is the biggest culprit in the exile of COBOL from most college curriculum.
A) It's really tough to find anything "New & startling" to say about something that has been around ro 40 years.
B) If you DO manage to come up with something to say, it's really easy for people to spot any inadvertant errors in your source code examples. If your paper is composed around the C family of languages, OTOH, you can Bluff and insist that "it Works Fine on MY Compiler & My Computer so the problem is all in Your OS."
This becomes a serious problem for those corporations who DO attempt to get people trained in COBOL. The company I was at a few years back wanted several of their new hires (Recent Graduates) trained in COBOL. They approached the local University to set up a couple courses. The University demanded a Fee from the company equal to twice the normal tuition for a course at that University before they would offer the course and refused to Add the course as an option for their current IT Undergraduates even though the company projected that they would be in need of at least a Dozen new graduates with COBOL skills every semester for the forseeable future.
This was one of the Megabanks that has critical systems running a COBOL system that would cost $100s or Millions of dollars to replace.
The Bank Knows the problem.
They've already been severly burned by consulting firms that promised to "Rebuild" their systems in a "Modern" language and failed in spectacular fashion after spending enough Millions to make those failures "Career Ending" for the executives and managers who "Sold" the projects to upper management.