Hello Dave,
The first thing I do with such ghostly compiler errors, is look out
the preprocessor output. Maybe something is #define'd and messing up
things. To do this, run
c++ -DHAVE_CONFIG_H -I. -I. -I.. -O2 -fno-exceptions \
-fno-check-new -fexceptions -c MainWindow.cxx
with an additions -E flag
Maarten