QT embedded widget demo code

I have downloaded the source code for the embedded widget demos and tried to get it to compile--I end up with the following error:

Compiler (mingw32) message :
In file included from ../../src/basicgraph/qtbasicgraph.cpp:9: ../../src/basicgraph/qtbasicgraph.h:14:17: QtGui: No such file or directory

QT creator 1.2.0, QT 2009.03

I have checked paths, etc, and all seems fine. I have googled the error, and have found others asking similar questions (but not here) but no posted answers...so I would appreciate any help

thanks

Jonathan Howland