On 1 Oct 2020, at 14:39, lifeattickville wrote:
> 
> I've had some success with a message-based system.
> 
> In the forked process I invoke Fl::handle_() with a custom message code. In the main code I establish a handler using Fl::add_handler(). Fl::run() operates as normal.  Something like:


Hmmm... OK...

TBH, I think I’d just use the Fl::awake() mechanism to pass callbacks to the main thread to be processed, as that is how we envisaged doing this TBH...


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