working popup windows

[Giuliano Cioffi <g cioffi tiscali it>]

Hi Everyone,

  I needed a special Gtk2::Combo-like  widget which instead of showing a
list would display  a window with various, user defined,  widgets in it.
So, after  too much time spent  on ``gtkcombo.c'' and google,  I finally
came up  with the code  here attached.  It works (besides  some cosmetic
issues) as I'd expect, grabbing the pointer/keyboard, etc.

  There's still an issue left:
- When I use a true popup window,  if one of the widgets it holds try to
grab_focus another one  (within the popup), the focus  instead goes back
on the application toplevel window, exactly  where it left when I popped
up  the combo  one (see  ``focus the  entry'' button   or try  to select
something in the ``subcombo'').
- When I use a toplevel undecorated window (FAKE_POPUP => 1), everything
works fine.  The point is that  some X servers still  put borders around
the window (namely cygwin's X port)  and anyway the popup solution seems
best to me.

  Any ideas? (maybe I'm just missing something)

  I intended this thing to continue  from where Muppet left off with his
``cellrenderer_date.pl'' example  (I didn't  find much  docs/examples on
this particular  subject), but I'd  really like  to sort out  this focus
problem.

keywords: popup, focus, grab, ungrab, pointer_grab, keyboard_grab

thanks,
-- 
Giuliano

#!/usr/bin/perl
$i=$j=$r=$b=-16.0;while((print"\n"),$b++<15){foreach$a(0..78){print
+(split //,' .:-;!/>)|&IH%*#')[$k&15];for($i=$k=$r=0;$j=$r*$r-$i*$i
-2+$a/25,$i=2*$r*$i+$b/10,$j*$j+$i*$i<11&&$k++<111;$r=$j){}}}