//for this method to work, the widget(w)'s preffered size must be set
public static void parentOffset(out int offX, out int offY, Widget w)
{
try {
int w1, h1, w2, h2;
w.GetSizeRequest (out w1, out h1);
w.Parent.GdkWindow.GetSize (out w2, out h2);
//halve the results as the container is centered
offX = (w2 - w1) /2; offY = (h2 - h1) /2;
}
catch (NullReferenceException e) {
Console.WriteLine ("Parent offset:" + e.Message);
offX = offY = 0;
}
}
