[Gtk2hs-users] Ensuring that something gets executed in the GUI thread

[Ivan P. <iva...@gm...>]

Dear all

I know that there exist postGUIAsync and postGUISync to execute code
in the GUI thread.

However, the thread locks if one calls postGUISync from the GUI thread
(nested calls to postGUISync are therefore not allowed). I would like
to ask if there's a way to work around that, with postGUI(A)Sync being
called only if the current computation is not being executed in the
GUI thread already.

(Since we don't have a Gtk monad, and to avoid passing the threadID
around, a dirty workaround could be to store the GUI thread ID in some
global variable and create wrapping functions that get the current GUI
thread, compare and use postGUI(A)Sync only if different.)

Regards
Ivan