Qt 2.0 Beta2 is not binary compatible with Beta1, this means that anyprograms linked with Beta1 must be recompiled.The most important fixes since Beta 1:configure Fixed the libzlib typo. Added -lflags argument.Platforms Fixes for Borland C++, Solaris and AIXQFileDialog Several user interface improvementsQPrinter Plain text printing works again. Multiple page printing fixed.QWidget New widget flag WStyle_DialogMajor changes since 1.4x:The Qt version 2.x series is not binary compatible with the 1.xseries. This means programs compiled with Qt version 1.x must berecompiled to work with Qt 2.0.Qt 2.0 is mostly, but not completely, source compatible with Qt 1.x.See the document "Porting from Qt 1.x to Qt 2.0" in the OnlineReference Documentation for information on how to port an existingQt 1.x-based program to Qt 2.0.***************************************************************************** New classes ****************************************************************************** Support for generalized configrable styles: QStyle and subclasses* Support for international software development: QTranslator and the QObject::tr() function QTextCodec (and subclasses) QString - a Unicode string QChar - a Unicode character* Convenient and powerful new collection classes: QMap<Key,Type> - QDict with arbitrary keys QValueList<Type> - QList of types other than pointers QStringList - QValueList<QString> with helper functions* Dialogs QColorDialog - user picks a color QFontDialog - user picks a font QWizard - framework for leading users through steps* Layout QGrid/QHBox/QVBox - grid and boxes of widgets automatically assembled QHGroupBox/QVGroupBox - easy framed groups of widgets* PNG Support PNG support is always compiled into Qt* Rich Text QTextView - formatted text and images QTextBrowser - navigate formatted text and images QStyleSheet - define your own XML formatting tags QSimpleRichText - display rixh text anywhere* Session management QSessionManager - safe state when system shuts down***************************************************************************** Major changes in existing classes *****************************************************************************QString is now 16-bit Unicode. QPoint, QPointArray, QSize and QRect now have 32-bit coordinates.