[Fxruby-users] FXList#makeItemVisible and ruby threads

[Joel V. <vj...@PA...>]

I'm updating a FXList from a thread, and I'd like to
always scroll to the last item. This is what I tried:

require 'fox'
include Fox

app = FXApp.new("List", "TEST")
win = FXMainWindow.new(app, "list")
list = FXList.new(win, 10)
Thread.new do
   20.times do |i|
     list << i.to_s
#    sleep 0.1
     list.makeItemVisible(list.numItems-1) # no effect
     sleep 0.1
   end
end
win.show
app.create
app.run

As it is, the makeItemVisible has no effect, immediate or delayed. 
However, if I uncomment the first sleep, it has an immediate effect, as 
desired.

Does that make sense?