1 Qt 2.0 introduces a wide range of major new features as well as
2 substantial improvements over the 1.x series. The documentation has
3 been significally extended and improved.
5 This file will only give an overview of the main changes since version
6 1.44. A complete list would simply be too large to be useful. For
7 more detail see the online documentation which is included in this
8 distribution, and also available on http://qt.nokia.com/doc/
10 The Qt version 2.x series is not binary compatible with the 1.x
11 series. This means programs compiled with Qt version 1.x must be
12 recompiled to work with Qt 2.0.
14 Qt 2.0 is mostly, but not completely, source compatible with Qt 1.x.
15 See the document "Porting from Qt 1.x to Qt 2.0" in the Online
16 Reference Documentation for information on how to port an existing Qt
17 1.x-based program to Qt 2.0. Note in particular the automatic porting
18 script included - it does a lot of the work for you.
20 As for 1.x, the API and functionality of Qt is completely portable
21 between Microsoft Windows and X11. And between Windows 95, 98 and NT:
22 Unlike most toolkits, Qt lets a single executable work on all three.
24 ****************************************************************************
25 * New major features *
26 ****************************************************************************
29 * Support for international software development:
30 QTranslator and the QObject::tr() function
31 QTextCodec (and subclasses)
32 QString is now a 16-bit Unicode string with good support for
33 legacy 8-bit interoperation. (The old 8-bit string class
34 from Qt 1.x has been renamed to QCString.)
35 QChar - a Unicode character
38 QTextView - formatted text and images
39 QTextBrowser - navigate formatted text and images
40 QStyleSheet - define your own XML formatting tags
41 QSimpleRichText - display rich text anywhere
43 * Convenient and powerful new collection classes:
44 QMap<Key,Type> - QDict with arbitrary keys
45 QValueList<Type> - QList of types other than pointers
46 QStringList - QValueList<QString> with helper functions
49 QColorDialog - user picks a color
50 QFontDialog - user picks a font
51 QWizard - framework for leading users through steps
54 QGrid/QHBox/QVBox - grid and boxes of widgets automatically assembled
55 QHGroupBox/QVGroupBox - easy framed groups of widgets
56 QSizePolicy - a widget's abilities to change size in different ways
59 New, much simpler and more powerful API for creating custom layouts
62 PNG support is now included in the core library
64 * Support for generalized configurable GUI styles:
68 QSessionManager - saving state when the system shuts down
70 * Extended coordinate system
71 QPoint, QPointArray, QSize and QRect now have 32-bit coordinates
74 Global functions, enums and macros now either start with a 'q' or
75 have been moved into the new namespace class "Qt"
77 ****************************************************************************
78 * List of removed classes *
79 ****************************************************************************
82 Use the new custom layout API.
84 * QPointVal, QPointData
93 ****************************************************************************
94 * List of new classes *
95 ****************************************************************************
150 For details, see e.g http://qt.nokia.com/doc/qcdestyle.html (or any
151 other class name, lowercased).