[wxhaskell-users] asynchronous updates

[Alex <a.p...@go...>]

Hello,

I am using wxHaskell to graphically show the state of a program that 
advertises state updates using TCP (which I decode using Data.Binary). 
When an update is received, I want to update the display. So I want the 
GUI to update its display asynchronously. I know that |processExecAsync| 
runs a command line process asynchronously, but I don't think this is 
what I want.

Here is a toy example of the situation: In a separate process, there is 
a counter. Every time that the counter is incremented, it sends a 
message via TCP to other Haskell processes (the clients). The clients 
manage a gui (in wxHaskell) that displays the value of the counter. When 
an update is received by the client, I want to update the counter on the 
display.

Ideally, I would like to spawn a thread to monitor the incoming TCP 
messages and then update the display from there, but I think this might 
mess up the event loop.

Many thanks,
Alexander.