[Gtk-sharp-list] Hiding a window

Jacob Ilsø Christensen jacobilsoe at gmail.com
Wed Jun 20 16:56:30 EDT 2007


Can you supply the source code? Then it's easier to determine what's wrong.


On 6/20/07, Søren Juul <zpon.dk at gmail.com> wrote:
> Hi
> I am working on a very small (simple) application, mainly to get to know
> gtk-sharp better. But I need to hide a window, while another is showing. I
> want to do this when a button is pushed, I thought I could do this from the
> function connected to the button with the EventHandler, such as "
> button.Clicked += new EventHandler(next);"
> and put something like "win.Visible = false;" in that function, but when I
> do this I get a terrible error:
> Unhandled Exception: System.NullReferenceException : Object reference not
> set to an instance of an object
>   at dataHolder.test (System.Object temp) [0x00000]
>   at inputWindow.next (System.Object obj, System.EventArgs args) [0x00000]
>   at (wrapper delegate-invoke)
> System.MulticastDelegate:invoke_void_object_EventArgs
> (object,System.EventArgs)
>   at GLib.Signal.voidObjectCallback (IntPtr handle, IntPtr gch) [0x00000]
>   at (wrapper native-to-managed) GLib.Signal:voidObjectCallback
> (intptr,intptr)
>   at <0x00000> <unknown method>
>   at (wrapper managed-to-native) Gtk.Application:gtk_main ()
>   at Gtk.Application.Run () [0x00000]
>   at inputWindow.makeWindow () [0x00000]
>   at inputWindow..ctor ( System.Object temp) [0x00000]
>   at Sample.Main () [0x00000]
> How can I avoid this? Hope my description was understandable, but pleas ask
> if there is something you don't understand.
> Thanks in advance
>  Søren Juul
> _______________________________________________
> Gtk-sharp-list maillist  -  Gtk-sharp-list at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/gtk-sharp-list

More information about the Gtk-sharp-list mailing list