I found the Class Chart from Trolltech: "http://doc.trolltech.com/3.0/classchart.html":http://doc.trolltech.com/3.0/classchart.html.
This is a graphical framework for Qt 3.x version with very low image resolution.
It's pity that Nokia Qt didn't release the new version (Qt 4.7) of Class Chart with high resolution.
The Class Chart will be helpful to teachers while teaching Qt programming.
It is also very useful for programmers while learning Qt.
Could Forum Nokia draw the Qt Framework (Class Chart) for us.