Re: Can put a GtkLayout in a GtkListBox

[Cedric Bellegarde <gnumdk gmail com>]

Ok, so here another question...

I want to implement drag and drop in a gtklistbox.

If i add buttons to gtklistbox, set button as drag source, it works.

If i add complex widgets to gtklistbox, as my container (gtkgrid) 
doesn't have a window, it fails to be a drag source.

That's why i'm looking for a container with a window (and tried with 
GtkLayout)

https://wiki.gnome.org/GnomeLove/DragNDropTutorial
"Note that these GTK+ widgets must have an associated X Window, check 
using GTK_WIDGET_NO_WINDOW(widget))."

any idea?

regards
--
Cédric Bellegarde

Le mer. 5 nov. 2014 à 13:28, Tristan Van Berkom 
<tristan upstairslabs com> a écrit :
> On Wed, 2014-11-05 at 13:08 +0100, Cedric Bellegarde wrote:
> >  Hello, in this code, adding a layout to a GtkListBox do not show 
> > layout
> >  content :(
> >
> >  What am i missing?
>
> A GtkLayout is like a GtkViewport which you can place widgets at
> specific locations and draw on etc, it has the special property
> that it does not require space (typically it's used in a scrolled
> window).
>
> The reason you would not see the label would be that the layout
> does not have any specific size request and as such does not get
> allocated any space, so anything packed inside it would be clipped
> away from view.
>
> Cheers,
>     -Tristan
>
> >  regards,
> >
> >  from gi.repository import Gtk
> >
> >  class mywindow(Gtk.Window):
> >
> >      def __init__(self):
> >          Gtk.Window.__init__(self, title="Hello")
> >          box = Gtk.ListBox()
> >          label = Gtk.Label("Hello")
> >          label2 = Gtk.Label("Hello2")
> >          layout = Gtk.Layout()
> >          layout.put(label, 0, 0)
> >          box.add(layout)
> >          box.add(label2)
> >          self.add(box)
> >
> >  win = mywindow()
> >  win.connect("delete-event", Gtk.main_quit)
> >  win.show_all()
> >  win.resize(300, 300)
> >  Gtk.main()
> >
> >  --
> >  Cédric Bellegarde
> >  _______________________________________________
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