#include <QtCore/qthread.h> #ifndef QTHREAD_H #ifndef QT_NO_THREAD class QThread: public QObject{ /* Some contents are skipped to improve readability */ public: void start(enum QThread::Priority = QThread::InheritPriority); /* ... */ }; #else // QT_NO_THREAD #endif // QT_NO_THREAD #endif // QTHREAD_H