// init the compare object and start it
compare_ = new Compare(new_buffer_, old_buffer_, dest_buffer_, options);
-#if QT_VERSION >= 0x050600
- connect(compare_, SIGNAL(errorOccurred()), this, SLOT(error()));
-#else
connect(compare_, SIGNAL(error()), this, SLOT(error()));
-#endif
connect(compare_, SIGNAL(finished(bool)), this, SLOT(finished(bool)));
connect(compare_, SIGNAL(progress(int)), this, SLOT(progress(int)));
connect(compare_, SIGNAL(progressMax(int)), this, SLOT(progressMax(int)));