Is the fact that GUI ScreenIO is implemented in CA-Realia COBOL going to cause problems with other COBOL compilers?
No. The GUI ScreenIO runtime DLL is actually implemented as a regular Windows DLL, just as any other callable DLL written in C or any other language would be implemented. The actual implementation of the runtime is transparent, as it should be. It’s been alleged that CA-Realia COBOL is not intended for use with PC applications. This is simply not true. CA-Realia COBOL works great for these applications. There was once an unfortunate statement in the CA-Realia manual that was intended to discourage technical support calls from earlier users of CA-Realia COBOL who were trying to program applications using the Windows API. As you might expect, CA-Realia took the position that they were not in the business of supporting this kind of thing; their target is COBOL applications, not low-level Windows programming. We can provide a CA-Realia contact if you wish to verify this.