[Gtk-sharp-list] problems with GdkWindow

Charles Iliya Krempeaux charles@reptile.ca
27 Feb 2003 08:29:33 -0800


Hello,

If I remember correctly,....  You have to "Show" (or "ShowAll")
your Widget/Window/Whatever before a Gdk.Window is created.

So... try the following...

                Application.Init();

                win.ShowAll();

                Gtk.Window win = new Gtk.Window("scrolling");
                Gdk.Window gdkwin = win.GdkWindow;

                Application.Run();

(Where the Gdk.Window stuff comes after the "ShowAll".)

Hope that helps.


See ya



On Thu, 2003-02-27 at 01:21, Thomas 'Dent' Mirlacher wrote:
> hi list,
> 
> running this testcase fails:
> 
> using Gtk;
> using Gdk;
> 
> public class Test {
>         public static void Main(string[] args)
>         {
>                 Application.Init();
> 
>                 Gtk.Window win = new Gtk.Window("scrolling");
>                 Gdk.Window gdkwin = win.GdkWindow;
> 
>                 win.ShowAll();
> 
>                 Application.Run();
>         }
> }
> 
> ... with the exception:
> 
> Unhandled Exception: System.NullReferenceException: A null value was found where an object instance was requiredin (unmanaged) 06 GtkSharp.ObjectManager:gtksharp_get_type_name (intptr)
> in <0x00004> 06 GtkSharp.ObjectManager:gtksharp_get_type_name (intptr)
> in <0x00050> 00 GtkSharp.ObjectManager:CreateObject (intptr)
> in <0x000b3> 00 GLib.Object:GetObject (intptr)
> in <0x0004e> 00 Gtk.Widget:get_GdkWindow ()
> in <0x0004f> 00 .Test:Main (string[])
> 
> 
> thanks for any ideas, help ...
> 
> 	++Thomas
-- 
     Charles Iliya Krempeaux, BSc
     charles@reptile.ca

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