[Qt-creator] Strange problem with code completion

[Daniel Teske]

> qcombobox.h is parsed correctly.
> Let me know if I can do anything else to help.

Could run qmake  -query QT_INSTALL_HEADERS on the command line. (It could be 
qmake-qt4 -query QT_INSTALL_HEADERS)

That should print: /usr/include/qt4 and there should be a file:
/usr/include/qt4/QtGui/QComboBox and/usr/include/qt4/QtGui/qcombobox.h

daniel