While QT_NO_QOBJECT is not defined and code wrapped in #ifndef QT_NO_QOBJECT is compiled, Creator shows and interprets the code as if the preprocessor variable would have been defined.

• code is shown grey/inactive
• no syntax check available
• F2 doesn't toggle between definition and implementation
• Hovered variables' values are not shown during debugging

Code is presented correctly to the debugger. It is possible to step through the code, while it is greyed out.