James asked me to post a bug report about this feature request.

In Mono we are able to package all of an application's data in the same
file.  So we can actually distribute a single file that contains everything
required to run.

One thing that is missing is that libglade does not have a mechanism to
allow us to provide pixmaps/images on a callback, but instead goes directly
to the harddrive.  

We need such a mechanism if we want to continue using this feature and take
full advantage of Glade.  I know we can "poke" things later and stick
images manually, but it is not as easy for a developer to do it.

One idea would be to have a different constructor:

   glade_xml_new_from_buffer_full (..., GladeXmlImageResolver resolver)
   typedef GdkPixbuf (*GladeXmlImageResolver)(char *name);

James suggested that he could also add a virtual method, and we could
override this method to do it.

Embedding everything in a file is extremely sweet, specially considering
that the same executable works on all platforms, so we do not even need to
repackage things with Mono.

We very much would like to have this nice feature.