[Chicken-users] Passing in a scheme function into C to be called later

[David Astels]

I’m integrating the Paho C MQTT client code with chicken. The publish stuff 
works fine; it’s just straight-up calling C functions.

Subscribing is puzzling me and I assume someone has encountered a similar 
situation at some point.  I need to be able to pass a scheme function to a call 
to a C function. It then gets stored and is needs to be called by the message 
received callback (a C function).

Any thoughts?

Dave