gtk_window_set_geometry_hints()

[Kevin Connor Arpe <kevinarpe gmail com>]

Hello,

Reading the docs/source for v3.22 of gtk_window_set_geometry_hints()
shows...
Ref: https://git.gnome.org/browse/gtk+/tree/gtk/gtkwindow.c?h=gtk-3-22#n4019

Docs:
* @geometry_widget: (allow-none): widget the geometry hints used to be
applied to
 *   or %NULL. Since 3.20 this argument is ignored and GTK behaves as if
%NULL was
 *   set.

Code:
  if (geometry_widget)
    info->mask &= ~(GDK_HINT_BASE_SIZE | GDK_HINT_RESIZE_INC);

I am confused.  It appears that 'geometry_widget' with non-NULL value will
change behaviour.

Can you please explain?

Kind regards,
Kevin Connor ARPE
Hongkong