Re: Hook user loop into program

[Maklakov Andrey <anmaklakov gmail com>]

 Hello.
    I'm not experienced in gtk+ too. But I think you should connect 
call of your function to some gtk event (g_signal_connect). Updating 
progress bar you should connect to timeout or idle event (read about 
g_timeout_add, g_idle_add). And in your function call:

 while (gtk_events_pending ())
    gtk_main_iteration ();

On 16.04.2011 15:04, Marco wrote:
> Hi,
>
> I'm a novice in gtk and I face some problems getting
> started. I don't find a solution in the manual (although
> I'm pretty sure it's in there) because I don't know what
> to look for.
>
> I create a main window (top level window) with a progress
> bar. What I want is to display the window and then execute
> a loop that does some tasks and updates the progress bar
> after every iteration.
>
> My problem is that I don't know how to hook my Âworking
> loop into all this. When I put my working loop before the
> gtk.main() call the loop is executed before the main
> window is shown, the point after the loop is not reached
> because gtk.main() is an endless loop. Where should I put the function
> DoSomeStuff()? I attached a minimal example, it's written in lua.
>
> Marco
>
>
> Mainwin = {}
> Mainwin.__index = Mainwin
>
> function Mainwin.new()
>      local self = {}
>      setmetatable(self, Mainwin)
>
>      self.w = gtk.window_new(gtk.WINDOW_TOPLEVEL)
>      self.w:set_title("Program")
>      self.w:connect('destroy', gtk.main_quit)
>
>      progress = gtk.progress_bar_new()
>      gtk.progress_bar_set_text(progress, "Processingâ")
>      gtk.progress_bar_set_fraction(progress, 0)
>      self.w:add(progress)
>
>      self.w:show_all()
>      return self
> end
>
> function DoSomeStuff()
>       for i=1, 10 do
>        -- do some work and
>        -- update progress bar
>        gtk.progress_bar_set_fraction(progress, i*.1)
>      end
>      return true
> end
>
> require "gtk"
> mainwin = Mainwin.new()
> gtk.main()
>
>
> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list