Threading 1.3: Success Story

Internals & Design
2

To answer the question myself, the following runs the UI updating code on the main thread again:

using Gtk.ShortNames

b = Box(:v)
win = Window(b,"test")

button = Button("do work")
push!(b,button)

pb = ProgressBar()
push!(b,pb)

Gtk.showall(win)


function doWork()
  N = 20
  for k=1:N
    Gtk.GLib.g_idle_add(nothing) do user_data
      set_gtk_property!(pb,:fraction,(k-1)/(N-1) )
      Cint(false)
    end
    sum(collect(1:100000000)) # some heavy work
  end
end

signal_connect(button, "clicked") do widget
  Threads.@spawn doWork()
end
1 Like