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    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.
    4 
    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/
    9 
   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.
   13 
   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.
   19 
   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.
   23 
   24 ****************************************************************************
   25 * 			   New major features				   *
   26 ****************************************************************************
   27 
   28 
   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
   36 
   37 * Rich Text
   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
   42 
   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
   47 
   48 * Dialogs
   49     QColorDialog - user picks a color
   50     QFontDialog - user picks a font
   51     QWizard - framework for leading users through steps
   52 
   53 * Layout
   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
   57 
   58 * Custom layouts
   59     New, much simpler and more powerful API for creating custom layouts
   60 
   61 * PNG Support
   62     PNG support is now included in the core library
   63 
   64 * Support for generalized configurable GUI styles:
   65     QStyle and subclasses
   66 
   67 * Session management
   68     QSessionManager - saving state when the system shuts down
   69 
   70 * Extended coordinate system
   71     QPoint, QPointArray, QSize and QRect now have 32-bit coordinates
   72 
   73 * Cleaner namespace
   74     Global functions, enums and macros now either start with a 'q' or
   75     have been moved into the new namespace class "Qt"
   76 
   77 ****************************************************************************
   78 * 			     List of removed classes			   *
   79 ****************************************************************************
   80 
   81 * QGManager
   82     Use the new custom layout API.
   83 
   84 * QPointVal, QPointData
   85     Use QPoint.
   86 
   87 * QUrlDrag
   88     Changed to QUriDrag
   89 
   90 * QWindow
   91     Use QWidget
   92 
   93 ****************************************************************************
   94 * 			     List of new classes			   *
   95 ****************************************************************************
   96 
   97 * QCDEStyle
   98 * QChar
   99 * QColorDialog
  100 * QCommonStyle
  101 * QConstString
  102 * QCString
  103 * QDragEnterEvent
  104 * QDragLeaveEvent
  105 * QDropSite
  106 * QFontDialog
  107 * QGLayoutIterator
  108 * QGrid
  109 * QHBox
  110 * QHButtonGroup
  111 * QHGroupBox
  112 * QHideEvent
  113 * QLayoutItem
  114 * QLayoutIterator
  115 * QMimeSource
  116 * QMimeSourceFactory
  117 * QMotifStyle
  118 * QPlatinumStyle
  119 * QSessionManager
  120 * QShowEvent
  121 * QSimpleRichText
  122 * QSizeGrip
  123 * QSizePolicy
  124 * QSortedList
  125 * QSpacerItem
  126 * QStringList
  127 * QStyle
  128 * QStyleSheet
  129 * QStyleSheetItem
  130 * Qt
  131 * QTab
  132 * QTabWidget
  133 * QTextBrowser
  134 * QTextCodec
  135 * QTextDecoder
  136 * QTextEncoder
  137 * QTextIStream
  138 * QTextOStream
  139 * QTextView
  140 * QTranslator
  141 * QUriDrag
  142 * QVBox
  143 * QVButtonGroup
  144 * QVGroupBox
  145 * QWheelEvent
  146 * QWidgetItem
  147 * QWindowsStyle
  148 * QWizard
  149 
  150 For details, see e.g http://qt.nokia.com/doc/qcdestyle.html (or any
  151 other class name, lowercased).