Finding absolute position of widget on the screen

["Padraig O'Briain" <Padraig Obriain Sun COM>]

I am trying to figure out what functions I should be using to find the absolute 
position of a widget.

I found the message below in the archives at 
http://mail.gnome.org/archives/gtk-list/1999-February/msg00023.html

but it does not work for me. It does work if I replace gdk_window_get_position() 
with gdk_window_get_origin(). is there a description somewhere of what the 
difference between the two functions?

BTW, I am using the development branch 1.3.x of GTK+.

Padraig

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You can access the GdkWindow for a widget with widget->window.

A fail-safe way of getting the absolute screen coordinates
for a GtkWidget would be something like:

====
if (GTK_WIDGET_TOPLEVEL (widget))
  gdk_window_get_position (widget->window, &x, &y);
else
  {
    GdkWindow *window;

    if (GTK_WIDGET_NO_WINDOW (widget))
      window = widget->window;
    else
      window = gdk_window_get_parent (widget->window);

    gdk_window_get_position (window, &x, &y);

    x += widget->allocation.x;
    y += widget->allocation.y;
  }
====

> - What is the widget at position x,y?

This is a little harder - there is a lot of address translation
going on. The following routines (I wrote these very
recently, and haven't tested them much yet) may help.

Regards,
                                        Owen

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