Hi, On Tuesday 18 May 2010 06:04:55 Nishant Sharma wrote: > Hello Everyone, > Are there some guidelines to migrate a project currently working in > QT-3.3.6 to QT-4.6 ? Take a look at these: http://doc.qt.nokia.com/4.7-snapshot/porting.html and the links contained therein. Cheers, Sean