[gtkada] Pixmap question

[Manuel Op de Coul]

I need to display a number of pixmaps in a horizontal row.
They are read from files with Gtk.Pixmap.Create_Pixmap and
then converted to a Gdk.Pixmap and Gdk.Bitmap with Get.
The width of the pixmaps varies, so in order to display them
with a fixed distance I need to read the width somehow.
But there are no functions Get_Width and Get_Height in either
Gtk.Pixmap, Gdk.Pixmap or Gdk.Bitmap. How can I do this?
Thanks in advance,

Manuel