How To Set Location Of Gtk Button In Gtk Overlay

So currently I have a Gtk Overlay. I can bring up my button that I would like to position using Gtk's Gtk.Align.CENTER, but I've been trying for so long now to position the button

Solution 1:

The Description section of the GtkOverlay documentation has your answer: you either use the margin properties of the GtkWidget or the GtkOverlay's get-child-position signal to set the position.