[Gtk-sharp-list] NullReferenceException on DrawingLayout

[Tiago Lima]

Hi,

I'm trying this code and it gives me a NulllReferenceException when calling 
the DrawLayout... Am I missing something ?

	Pango.Layout layout = new Pango.Layout(_gtkDrawingArea.PangoContext);
	
	Pango.FontDescription font = new Pango.FontDescription();
	Gdk.Pixmap pixmap = new Gdk.Pixmap(_gtkDrawingArea.GdkWindow, 400, 400, -1);
	pixmap.DrawRectangle(_gtkDrawingArea.Style.WhiteGC, true, 0, 0, 400, 400);
	
	font.Size = 30 * (int)Pango.Scale.PangoScale;
	font.Family = "Courier";
	layout.FontDescription = font;
	
	layout.SetText("Test Text : ");
	
	Attribute attribute = Attr.ForegroundNew(0xff, 0xff, 0);
	attribute.start_index = 0;
	attribute.end_index = 1;
	
	layout.Attributes = new AttrList();
	layout.Attributes.Insert(attribute);
	
	_gtkDrawingArea.GdkWindow.DrawLayout(_gtkDrawingArea.Style.BlackGC, 20, 200, 
layout);  // <<<<<<<<<<<<<< error inside


Unhandled Exception: System.Reflection.TargetInvocationException: Exception 
has been thrown by the target of an invocation. ---> 
System.NullReferenceException: A null value was found where an object 
instance was required
in (unmanaged) (wrapper managed-to-native) Gdk.Drawable:gdk_draw_layout 
(intptr,intptr,int,int,intptr)
in <0x00004> (wrapper managed-to-native) Gdk.Drawable:gdk_draw_layout 
(intptr,intptr,int,int,intptr)
in <0x00061> Gdk.Drawable:DrawLayout (Gdk.GC,int,int,Pango.Layout)

And if i remove the attribute it works fine...

Thanks in advance,
	Tiago Lima