On Fri, 2007-03-23 at 20:24 +0300, Thach Si Lam wrote:
I'm trying to write Bouncing Ball demo in Gtk2hs. But i coudn't find timer class (like in wxhaskell demo) in Gtk2hs.
There is timeoutAdd: http://haskell.org/gtk2hs/docs/gtk2hs-docs-0.9.10/System-Glib-MainLoop.html#... used like so: timeoutAdd action 1000 where action is an action with type IO Bool and the number is the time to wait in milliseconds, (ie 1000 is 1 second). If the action returns True then it will get called again at the next timeout, otherwise it will not be called again.
How to deal with it ? In fact i have 2 processes: p1 for computing some variables and p2 for changing (applying those variables) in canvas. How to let them communicate together and update to canvas ? Please, help me. Thank you very much.
I'm forwarding this to the Haskell Cafe mailing list where someone might be able to give you a pointer. Duncan