Before you can compile this example you have to

1. You will need Qt 3.0 (This example will not work with Qt 2.3.0)
2. You will need ROOT =>4.04
3. First Make the QT-Root Interface
4. add  "$QTROOTSRC" to  your $LD_LIBRARY_PATH
5. If you compile the Qt-Root Interface without thread suppurt remove the option
   thread from the config line in qtrootexample.pro (you can also use the project setting in the
   Qt-designer)