Qt 2.0 introduces a wide range of major new features as well as

substantial improvements over the 1.x series.  The documentation has

been significally extended and improved.

This file will only give an overview of the main changes since version

1.44.  A complete list would simply be too large to be useful.  For

more detail see the online documentation which is included in this

distribution, and also available on http://qt.nokia.com/doc/

The Qt version 2.x series is not binary compatible with the 1.x

series.  This means programs compiled with Qt version 1.x must be

recompiled 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 Online

Reference Documentation for information on how to port an existing Qt

1.x-based program to Qt 2.0.  Note in particular the automatic porting

script included - it does a lot of the work for you.

As for 1.x, the API and functionality of Qt is completely portable

between Microsoft Windows and X11.  And between Windows 95, 98 and NT:

Unlike most toolkits, Qt lets a single executable work on all three.

****************************************************************************

* 			   New major features				   *

****************************************************************************

* Support for international software development:

    QTranslator and the QObject::tr() function

    QTextCodec (and subclasses)

    QString is now a 16-bit Unicode string with good support for

	legacy 8-bit interoperation. (The old 8-bit string class

	from Qt 1.x has been renamed to QCString.)

    QChar - a Unicode character

* Rich Text

    QTextView - formatted text and images

    QTextBrowser - navigate formatted text and images

    QStyleSheet - define your own XML formatting tags

    QSimpleRichText - display rich text anywhere

* 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

    QSizePolicy - a widget's abilities to change size in different ways

* Custom layouts

    New, much simpler and more powerful API for creating custom layouts

* PNG Support

    PNG support is now included in the core library

* Support for generalized configurable GUI styles:

    QStyle and subclasses

* Session management

    QSessionManager - saving state when the system shuts down

* Extended coordinate system

    QPoint, QPointArray, QSize and QRect now have 32-bit coordinates

* Cleaner namespace

    Global functions, enums and macros now either start with a 'q' or

    have been moved into the new namespace class "Qt"

****************************************************************************

* 			     List of removed classes			   *

****************************************************************************

* QGManager

    Use the new custom layout API.

* QPointVal, QPointData

    Use QPoint.

* QUrlDrag

    Changed to QUriDrag

* QWindow

    Use QWidget

****************************************************************************

* 			     List of new classes			   *

****************************************************************************

* QCDEStyle

* QChar

* QColorDialog

* QCommonStyle

* QConstString

* QCString

* QDragEnterEvent

* QDragLeaveEvent

* QDropSite

* QFontDialog

* QGLayoutIterator

* QGrid

* QHBox

* QHButtonGroup

* QHGroupBox

* QHideEvent

* QLayoutItem

* QLayoutIterator

* QMimeSource

* QMimeSourceFactory

* QMotifStyle

* QPlatinumStyle

* QSessionManager

* QShowEvent

* QSimpleRichText

* QSizeGrip

* QSizePolicy

* QSortedList

* QSpacerItem

* QStringList

* QStyle

* QStyleSheet

* QStyleSheetItem

* Qt

* QTab

* QTabWidget

* QTextBrowser

* QTextCodec

* QTextDecoder

* QTextEncoder

* QTextIStream

* QTextOStream

* QTextView

* QTranslator

* QUriDrag

* QVBox

* QVButtonGroup

* QVGroupBox

* QWheelEvent

* QWidgetItem

* QWindowsStyle

* QWizard

For details, see e.g http://qt.nokia.com/doc/qcdestyle.html (or any

other class name, lowercased).