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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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  <title>Qt 4.8: Qt3Support Module</title>
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    <a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
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<div class="content mainContent">
<div class="toc">
<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#classes">Classes</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
</ul>
</div>
<h1 class="title">Qt3Support Module</h1>
<span class="subtitle"></span>
<!-- $$$Qt3Support-brief -->
<p>The Qt3Support module provides classes that ease porting from Qt 3 to Qt 4. <a href="#details">More...</a></p>
<!-- @@@Qt3Support -->
<a name="classes"></a>
<h2>Classes</h2>
<table class="annotated">
<tr class="odd topAlign"><td class="tblName"><p><a href="q3accel.html" class="compat">Q3Accel</a></p></td><td class="tblDescr"><p>Handles keyboard accelerator and shortcut keys</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3action.html" class="compat">Q3Action</a></p></td><td class="tblDescr"><p>Abstract user interface action that can appear both in menus and tool bars</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3actiongroup.html" class="compat">Q3ActionGroup</a></p></td><td class="tblDescr"><p>Groups actions together</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3asciicache.html" class="compat">Q3AsciiCache</a></p></td><td class="tblDescr"><p>Template class that provides a cache based on char* keys</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3asciicacheiterator.html" class="compat">Q3AsciiCacheIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3AsciiCache collections</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3asciidict.html" class="compat">Q3AsciiDict</a></p></td><td class="tblDescr"><p>Template class that provides a dictionary based on char* keys</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3asciidictiterator.html" class="compat">Q3AsciiDictIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3AsciiDict collections</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3button.html" class="compat">Q3Button</a></p></td><td class="tblDescr"><p>Compatibility base class of button widgets</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3buttongroup.html" class="compat">Q3ButtonGroup</a></p></td><td class="tblDescr"><p>Organizes QAbstractButton widgets in a group</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3cstring.html" class="compat">Q3CString</a></p></td><td class="tblDescr"><p>Abstraction of the classic C zero-terminated char array (char *)</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3cache.html" class="compat">Q3Cache</a></p></td><td class="tblDescr"><p>Template class that provides a cache based on QString keys</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3cacheiterator.html" class="compat">Q3CacheIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3Cache collections</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3canvas.html" class="compat">Q3Canvas</a></p></td><td class="tblDescr"><p>2D area that can contain Q3CanvasItem objects</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3canvasellipse.html" class="compat">Q3CanvasEllipse</a></p></td><td class="tblDescr"><p>Ellipse or ellipse segment on a Q3Canvas</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3canvasitem.html" class="compat">Q3CanvasItem</a></p></td><td class="tblDescr"><p>Abstract graphic object on a Q3Canvas</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3canvasitemlist.html" class="compat">Q3CanvasItemList</a></p></td><td class="tblDescr"><p>List of Q3CanvasItems</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3canvasline.html" class="compat">Q3CanvasLine</a></p></td><td class="tblDescr"><p>Line on a Q3Canvas</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3canvaspixmap.html" class="compat">Q3CanvasPixmap</a></p></td><td class="tblDescr"><p>Pixmaps for Q3CanvasSprites</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3canvaspixmaparray.html" class="compat">Q3CanvasPixmapArray</a></p></td><td class="tblDescr"><p>Array of Q3CanvasPixmaps</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3canvaspolygon.html" class="compat">Q3CanvasPolygon</a></p></td><td class="tblDescr"><p>Polygon on a Q3Canvas</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3canvaspolygonalitem.html" class="compat">Q3CanvasPolygonalItem</a></p></td><td class="tblDescr"><p>Polygonal canvas item on a Q3Canvas</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3canvasrectangle.html" class="compat">Q3CanvasRectangle</a></p></td><td class="tblDescr"><p>Rectangle on a Q3Canvas</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3canvasspline.html" class="compat">Q3CanvasSpline</a></p></td><td class="tblDescr"><p>Multi-bezier splines on a Q3Canvas</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3canvassprite.html" class="compat">Q3CanvasSprite</a></p></td><td class="tblDescr"><p>Animated canvas item on a Q3Canvas</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3canvastext.html" class="compat">Q3CanvasText</a></p></td><td class="tblDescr"><p>Text object on a Q3Canvas</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3canvasview.html" class="compat">Q3CanvasView</a></p></td><td class="tblDescr"><p>On-screen view of a Q3Canvas</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3checklistitem.html" class="compat">Q3CheckListItem</a></p></td><td class="tblDescr"><p>Checkable list view items</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3checktableitem.html" class="compat">Q3CheckTableItem</a></p></td><td class="tblDescr"><p>Checkboxes in Q3Tables</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3colordrag.html" class="compat">Q3ColorDrag</a></p></td><td class="tblDescr"><p>Drag and drop object for transferring colors between widgets</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3combobox.html" class="compat">Q3ComboBox</a></p></td><td class="tblDescr"><p>Combined button and popup list</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3combotableitem.html" class="compat">Q3ComboTableItem</a></p></td><td class="tblDescr"><p>Means of using comboboxes in Q3Tables</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3databrowser.html" class="compat">Q3DataBrowser</a></p></td><td class="tblDescr"><p>Data manipulation and navigation for data entry forms</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3datatable.html" class="compat">Q3DataTable</a></p></td><td class="tblDescr"><p>Flexible SQL table widget that supports browsing and editing</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3dataview.html" class="compat">Q3DataView</a></p></td><td class="tblDescr"><p>Read-only SQL forms</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3dateedit.html" class="compat">Q3DateEdit</a></p></td><td class="tblDescr"><p>Date editor</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3datetimeedit.html" class="compat">Q3DateTimeEdit</a></p></td><td class="tblDescr"><p>Combines a Q3DateEdit and Q3TimeEdit widget into a single widget for editing datetimes</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3datetimeeditbase.html" class="compat">Q3DateTimeEditBase</a></p></td><td class="tblDescr"><p>Abstraction for date and edit editors</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3deepcopy.html" class="compat">Q3DeepCopy</a></p></td><td class="tblDescr"><p>Template class which ensures that implicitly shared and explicitly shared classes reference unique data</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3dict.html" class="compat">Q3Dict</a></p></td><td class="tblDescr"><p>Template class that provides a dictionary based on QString keys</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3dictiterator.html" class="compat">Q3DictIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3Dict collections</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3dns.html" class="compat">Q3Dns</a></p></td><td class="tblDescr"><p>Asynchronous DNS lookups</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3dockarea.html" class="compat">Q3DockArea</a></p></td><td class="tblDescr"><p>Manages and lays out Q3DockWindows</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3dockwindow.html" class="compat">Q3DockWindow</a></p></td><td class="tblDescr"><p>Widget which can be docked inside a Q3DockArea or floated as a top level window on the desktop</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3dragobject.html" class="compat">Q3DragObject</a></p></td><td class="tblDescr"><p>Encapsulates MIME-based data transfer</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3dropsite.html" class="compat">Q3DropSite</a></p></td><td class="tblDescr"><p>Nothing and does nothing</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3editorfactory.html" class="compat">Q3EditorFactory</a></p></td><td class="tblDescr"><p>Used to create editor widgets for QVariant data types</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3filedialog.html" class="compat">Q3FileDialog</a></p></td><td class="tblDescr"><p>Dialogs that allow users to select files or directories</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3fileiconprovider.html" class="compat">Q3FileIconProvider</a></p></td><td class="tblDescr"><p>Icons for Q3FileDialog to use</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3filepreview.html" class="compat">Q3FilePreview</a></p></td><td class="tblDescr"><p>File previewing in Q3FileDialog</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3frame.html" class="compat">Q3Frame</a></p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3ftp.html" class="compat">Q3Ftp</a></p></td><td class="tblDescr"><p>Implementation of the FTP protocol</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3grid.html" class="compat">Q3Grid</a></p></td><td class="tblDescr"><p>Simple geometry management of its children</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3gridview.html" class="compat">Q3GridView</a></p></td><td class="tblDescr"><p>Abstract base for fixed-size grids</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3groupbox.html" class="compat">Q3GroupBox</a></p></td><td class="tblDescr"><p>Group box frame with a title</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3hbox.html" class="compat">Q3HBox</a></p></td><td class="tblDescr"><p>Horizontal geometry management for its child widgets</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3hboxlayout.html" class="compat">Q3HBoxLayout</a></p></td><td class="tblDescr"><p>Lines up widgets horizontally</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3hbuttongroup.html" class="compat">Q3HButtonGroup</a></p></td><td class="tblDescr"><p>Organizes button widgets in a group with one horizontal row</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3hgroupbox.html" class="compat">Q3HGroupBox</a></p></td><td class="tblDescr"><p>Organizes widgets in a group with one horizontal row</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3header.html" class="compat">Q3Header</a></p></td><td class="tblDescr"><p>Header row or column, e.g&#x2e; for tables and listviews</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3http.html" class="compat">Q3Http</a></p></td><td class="tblDescr"><p>Implementation of the HTTP protocol</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3httpheader.html" class="compat">Q3HttpHeader</a></p></td><td class="tblDescr"><p>Contains header information for HTTP</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3httprequestheader.html" class="compat">Q3HttpRequestHeader</a></p></td><td class="tblDescr"><p>Contains request header information for HTTP</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3httpresponseheader.html" class="compat">Q3HttpResponseHeader</a></p></td><td class="tblDescr"><p>Contains response header information for HTTP</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3icondrag.html" class="compat">Q3IconDrag</a></p></td><td class="tblDescr"><p>Supports drag and drop operations within a Q3IconView</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3icondragitem.html" class="compat">Q3IconDragItem</a></p></td><td class="tblDescr"><p>Encapsulates a drag item</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3iconview.html" class="compat">Q3IconView</a></p></td><td class="tblDescr"><p>Area with movable labelled icons</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3iconviewitem.html" class="compat">Q3IconViewItem</a></p></td><td class="tblDescr"><p>Single item in a Q3IconView</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3imagedrag.html" class="compat">Q3ImageDrag</a></p></td><td class="tblDescr"><p>Drag and drop object for transferring images</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3intcache.html" class="compat">Q3IntCache</a></p></td><td class="tblDescr"><p>Template class that provides a cache based on long keys</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3intcacheiterator.html" class="compat">Q3IntCacheIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3IntCache collections</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3intdict.html" class="compat">Q3IntDict</a></p></td><td class="tblDescr"><p>Template class that provides a dictionary based on long keys</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3intdictiterator.html" class="compat">Q3IntDictIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3IntDict collections</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3listbox.html" class="compat">Q3ListBox</a></p></td><td class="tblDescr"><p>List of selectable, read-only items</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3listboxitem.html" class="compat">Q3ListBoxItem</a></p></td><td class="tblDescr"><p>The base class of all list box items</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3listboxpixmap.html" class="compat">Q3ListBoxPixmap</a></p></td><td class="tblDescr"><p>List box items with a pixmap and optional text</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3listboxtext.html" class="compat">Q3ListBoxText</a></p></td><td class="tblDescr"><p>List box items that display text</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3listview.html" class="compat">Q3ListView</a></p></td><td class="tblDescr"><p>Implements a list/tree view</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3listviewitem.html" class="compat">Q3ListViewItem</a></p></td><td class="tblDescr"><p>Implements a list view item</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3listviewitemiterator.html" class="compat">Q3ListViewItemIterator</a></p></td><td class="tblDescr"><p>Iterator for collections of Q3ListViewItems</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3localfs.html" class="compat">Q3LocalFs</a></p></td><td class="tblDescr"><p>Implementation of a QNetworkProtocol that works on the local file system</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3mainwindow.html" class="compat">Q3MainWindow</a></p></td><td class="tblDescr"><p>Main application window, with a menu bar, dock windows (e.g&#x2e; for toolbars), and a status bar</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3memarray.html" class="compat">Q3MemArray</a></p></td><td class="tblDescr"><p>Template class that provides arrays of simple types</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3mimesourcefactory.html" class="compat">Q3MimeSourceFactory</a></p></td><td class="tblDescr"><p>Extensible provider of mime-typed data</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3multilineedit.html" class="compat">Q3MultiLineEdit</a></p></td><td class="tblDescr"><p>Simple editor for inputting text</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3networkoperation.html" class="compat">Q3NetworkOperation</a></p></td><td class="tblDescr"><p>Common operations for network protocols</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3networkprotocol.html" class="compat">Q3NetworkProtocol</a></p></td><td class="tblDescr"><p>Common API for network protocols</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3paintdevicemetrics.html" class="compat">Q3PaintDeviceMetrics</a></p></td><td class="tblDescr"><p>Information about a paint device</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3painter.html" class="compat">Q3Painter</a></p></td><td class="tblDescr"><p>Qt 3 compatibility wrapper for QPainter</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3picture.html" class="compat">Q3Picture</a></p></td><td class="tblDescr"><p>Paint device that records and replays Q3Painter commands</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3pointarray.html" class="compat">Q3PointArray</a></p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3popupmenu.html" class="compat">Q3PopupMenu</a></p></td><td class="tblDescr"><p>Thin compatibility wrapper around QMenu</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3process.html" class="compat">Q3Process</a></p></td><td class="tblDescr"><p>Used to start external programs and to communicate with them</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3progressbar.html" class="compat">Q3ProgressBar</a></p></td><td class="tblDescr"><p>Horizontal progress bar</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3progressdialog.html" class="compat">Q3ProgressDialog</a></p></td><td class="tblDescr"><p>Feedback on the progress of a slow operation</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3ptrcollection.html" class="compat">Q3PtrCollection</a></p></td><td class="tblDescr"><p>The base class of most pointer-based Qt collections</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3ptrdict.html" class="compat">Q3PtrDict</a></p></td><td class="tblDescr"><p>Template class that provides a dictionary based on void* keys</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3ptrdictiterator.html" class="compat">Q3PtrDictIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3PtrDict collections</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3ptrlist.html" class="compat">Q3PtrList</a></p></td><td class="tblDescr"><p>Template class that provides a list</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3ptrlistiterator.html" class="compat">Q3PtrListIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3PtrList collections</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3ptrqueue.html" class="compat">Q3PtrQueue</a></p></td><td class="tblDescr"><p>Template class that provides a queue</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3ptrstack.html" class="compat">Q3PtrStack</a></p></td><td class="tblDescr"><p>Template class that provides a stack</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3ptrvector.html" class="compat">Q3PtrVector</a></p></td><td class="tblDescr"><p>Template collection class that provides a vector (array)</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3rangecontrol.html" class="compat">Q3RangeControl</a></p></td><td class="tblDescr"><p>Integer value within a range</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3scrollview.html" class="compat">Q3ScrollView</a></p></td><td class="tblDescr"><p>Scrolling area with on-demand scroll bars</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3semaphore.html" class="compat">Q3Semaphore</a></p></td><td class="tblDescr"><p>Robust integer semaphore</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3serversocket.html" class="compat">Q3ServerSocket</a></p></td><td class="tblDescr"><p>TCP-based server</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3shared.html" class="compat">Q3Shared</a></p></td><td class="tblDescr"><p>Used internally for implementing shared classes</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3signal.html" class="compat">Q3Signal</a></p></td><td class="tblDescr"><p>Can be used to send signals for classes that don't inherit QObject</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3simplerichtext.html" class="compat">Q3SimpleRichText</a></p></td><td class="tblDescr"><p>Small displayable piece of rich text</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3socket.html" class="compat">Q3Socket</a></p></td><td class="tblDescr"><p>Buffered TCP connection</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3socketdevice.html" class="compat">Q3SocketDevice</a></p></td><td class="tblDescr"><p>Platform-independent low-level socket API</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3sqlcursor.html" class="compat">Q3SqlCursor</a></p></td><td class="tblDescr"><p>Browsing and editing of SQL tables and views</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3sqleditorfactory.html" class="compat">Q3SqlEditorFactory</a></p></td><td class="tblDescr"><p>Used to create the editors used by Q3DataTable and Q3SqlForm</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3sqlfieldinfo.html" class="compat">Q3SqlFieldInfo</a></p></td><td class="tblDescr"><p>Stores meta data associated with a SQL field</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3sqlform.html" class="compat">Q3SqlForm</a></p></td><td class="tblDescr"><p>Creates and manages data entry forms tied to SQL databases</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3sqlpropertymap.html" class="compat">Q3SqlPropertyMap</a></p></td><td class="tblDescr"><p>Used to map widgets to SQL fields</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3sqlrecordinfo.html" class="compat">Q3SqlRecordInfo</a></p></td><td class="tblDescr"><p>Encapsulates a set of database field meta data</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3sqlselectcursor.html" class="compat">Q3SqlSelectCursor</a></p></td><td class="tblDescr"><p>Browsing of general SQL SELECT statements</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3storeddrag.html" class="compat">Q3StoredDrag</a></p></td><td class="tblDescr"><p>Simple stored-value drag object for arbitrary MIME data</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3strilist.html" class="compat">Q3StrIList</a></p></td><td class="tblDescr"><p>Doubly-linked list of char* with case-insensitive comparison</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3strlist.html" class="compat">Q3StrList</a></p></td><td class="tblDescr"><p>Doubly-linked list of char*</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3strlistiterator.html" class="compat">Q3StrListIterator</a></p></td><td class="tblDescr"><p>Iterator for the Q3StrList and Q3StrIList classes</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3stylesheet.html" class="compat">Q3StyleSheet</a></p></td><td class="tblDescr"><p>Collection of styles for rich text rendering and a generator of tags</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3stylesheetitem.html" class="compat">Q3StyleSheetItem</a></p></td><td class="tblDescr"><p>Encapsulation of a set of text styles</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3syntaxhighlighter.html" class="compat">Q3SyntaxHighlighter</a></p></td><td class="tblDescr"><p>Base class for implementing Q3TextEdit syntax highlighters</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3tabdialog.html" class="compat">Q3TabDialog</a></p></td><td class="tblDescr"><p>Stack of tabbed widgets</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3table.html" class="compat">Q3Table</a></p></td><td class="tblDescr"><p>Flexible editable table widget</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3tableitem.html" class="compat">Q3TableItem</a></p></td><td class="tblDescr"><p>The cell content for Q3Table cells</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3tableselection.html" class="compat">Q3TableSelection</a></p></td><td class="tblDescr"><p>Access to a selected area in a Q3Table</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3textbrowser.html" class="compat">Q3TextBrowser</a></p></td><td class="tblDescr"><p>Rich text browser with hypertext navigation</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3textdrag.html" class="compat">Q3TextDrag</a></p></td><td class="tblDescr"><p>Drag and drop object for transferring plain and Unicode text</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3textedit.html" class="compat">Q3TextEdit</a></p></td><td class="tblDescr"><p>Powerful single-page rich text editor</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3textstream.html" class="compat">Q3TextStream</a></p></td><td class="tblDescr"><p>Basic functions for reading and writing text using a QIODevice</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3textview.html" class="compat">Q3TextView</a></p></td><td class="tblDescr"><p>Rich text viewer</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3timeedit.html" class="compat">Q3TimeEdit</a></p></td><td class="tblDescr"><p>Time editor</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3toolbar.html" class="compat">Q3ToolBar</a></p></td><td class="tblDescr"><p>Movable panel containing widgets such as tool buttons</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3uridrag.html" class="compat">Q3UriDrag</a></p></td><td class="tblDescr"><p>Drag object for a list of URI references</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3url.html" class="compat">Q3Url</a></p></td><td class="tblDescr"><p>URL parser and simplifies working with URLs</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3urloperator.html" class="compat">Q3UrlOperator</a></p></td><td class="tblDescr"><p>Common operations on URLs</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3vbox.html" class="compat">Q3VBox</a></p></td><td class="tblDescr"><p>Vertical geometry management of its child widgets</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3vboxlayout.html" class="compat">Q3VBoxLayout</a></p></td><td class="tblDescr"><p>Lines up widgets vertically</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3vbuttongroup.html" class="compat">Q3VButtonGroup</a></p></td><td class="tblDescr"><p>Organizes button widgets in a vertical column</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3vgroupbox.html" class="compat">Q3VGroupBox</a></p></td><td class="tblDescr"><p>Organizes widgets in a group with one vertical column</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3valuelist.html" class="compat">Q3ValueList</a></p></td><td class="tblDescr"><p>Value-based template class that provides lists</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3valuelistconstiterator.html" class="compat">Q3ValueListConstIterator</a></p></td><td class="tblDescr"><p>Const iterator for Q3ValueList</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3valuelistiterator.html" class="compat">Q3ValueListIterator</a></p></td><td class="tblDescr"><p>Iterator for Q3ValueList</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3valuestack.html" class="compat">Q3ValueStack</a></p></td><td class="tblDescr"><p>Value-based template class that provides a stack</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3valuevector.html" class="compat">Q3ValueVector</a></p></td><td class="tblDescr"><p>Value-based template class that provides a dynamic array</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3whatsthis.html" class="compat">Q3WhatsThis</a></p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="q3widgetstack.html" class="compat">Q3WidgetStack</a></p></td><td class="tblDescr"><p>Stack of widgets of which only the top widget is user-visible</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="q3wizard.html" class="compat">Q3Wizard</a></p></td><td class="tblDescr"><p>Framework for wizard dialogs</p></td></tr>
</table>
<!-- $$$Qt3Support-description -->
<a name="details"></a>
<div class="descr">
<h2>Detailed Description</h2>
<a name="qt3support"></a><p><b>Warning:</b> The classes in this module are intended to be used in intermediate stages of a porting process and are not intended to be used in production code.</p>
<p>To include the definitions of the module's classes, use the following directive:</p>
<pre class="cpp"> <span class="preprocessor">#include &lt;Qt3Support&gt;</span></pre>
<p>To link against the module, add this line to your <a href="qmake-manual.html#qmake">qmake</a> <tt>.pro</tt> file:</p>
<pre class="cpp"> QT += qt3support</pre>
<p><b>Note:</b> Since this module provides compatibility classes for diverse parts of the Qt 3 API, it has dependencies on the <a href="qtcore.html">QtCore</a>, <a href="qtgui.html">QtGui</a>, <a href="qtnetwork.html">QtNetwork</a>, <a href="qtsql.html">QtSql</a>, and <a href="qtxml.html">QtXml</a> modules.</p>
</div>
<p><b>See also </b><a href="porting4.html">Porting to Qt 4</a>.</p>
<!-- @@@Qt3Support -->
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