compile question

[Melissa G. Vasquez]

I am running on an Ultra 10 with Solaris 2.6, X11R6 and gcc 2.95.1. I am
getting the following compile errors: 

	/usr/openwin/include/X11/Xlib.h:2063: ANSI C++ forbids declaration
'XSetTransientForHint' with no type 
. 
. 
.

Any suggestions?
Thanks, 
Melissa Vasquez 
mvasquez@ausinfo.com