I think there is a type in gdkevent.pre in 7.7 (I don't have access to cvs from my work here, so I'm posting it here instead).

The latest changes to gdkevent.pre on http://pike.ida.liu.se/development/cvs/pike.xml?between=2006-01-16&and=2...

At the bottom, case GDK_CLIENT_EVENT:

- ref_push_string(s_data ); + ref_push_string(_STR("data "));

I think that should just be "data", not "data ".