These tutorials are translations of the C++ versions provided with Qt 3.0.x. Tutorial 7 is included, but it does not yet work properly because it is not yet possible to create custom signals. Assuming that you're using Mono and that Qt.dll has been installed in /opt/kde/lib you can compile the first tutorial using > mcs -L /opt/kde/lib -r Qt t1.cs To run the first tutorial, use > mono t1.exe