Does Qt offer a (guaranteed) debug definition?

Question

Does anyone know an officially supported way to include debug-build only code in Qt? For example:

#ifdef QT_DEBUG
// do something
#endif

Basica

Answer 1

For check debug mode:

#ifdef QT_DEBUG
    //Some codes
#endif

For check release mode:

#ifndef QT_DEBUG    //<== Please note... if not defined
    //Some codes
#endif