On Sat, 28 Apr 2012 10:53:03 +0200, Cyril HAENEL wrote: > Thus what I need is just a QT app which simulate a TFT screen by > creating an 480x272 image in which ... Are you trying to reinvent qvfb ( http://qt-project.org/doc/qt-4.8/qvfb.html ) ? Uwe