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<title>Qt 4.2: Input/Output and Networking</title>
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<td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> · <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a> · <a href="functions.html"><font color="#004faf">Functions</font></a></td>
<td align="right" valign="top" width="230"><a href="http://www.trolltech.com"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></a></td></tr></table><h1 align="center">Input/Output and Networking<br /><small></small></h1>
<p>These classes are used to handle input and output to and from external devices, processes, files etc. as well as manipulating files and directories.</p>
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<tr valign="top" class="odd"><th><a href="qabstractfileengine.html">QAbstractFileEngine</a></th><td>Abstraction for accessing the filesystem</td></tr>
<tr valign="top" class="even"><th><a href="qabstractfileenginehandler.html">QAbstractFileEngineHandler</a></th><td>Way to register custom file engines with your application</td></tr>
<tr valign="top" class="odd"><th><a href="qabstractsocket.html">QAbstractSocket</a></th><td>The base functionality common to all socket types</td></tr>
<tr valign="top" class="even"><th><a href="qbuffer.html">QBuffer</a></th><td>QIODevice interface for a QByteArray</td></tr>
<tr valign="top" class="odd"><th><a href="qclipboard.html">QClipboard</a></th><td>Access to the window system clipboard</td></tr>
<tr valign="top" class="even"><th><a href="qdatastream.html">QDataStream</a></th><td>Serialization of binary data to a QIODevice</td></tr>
<tr valign="top" class="odd"><th><a href="qdir.html">QDir</a></th><td>Access to directory structures and their contents</td></tr>
<tr valign="top" class="even"><th><a href="qfile.html">QFile</a></th><td>Interface for reading from and writing to files</td></tr>
<tr valign="top" class="odd"><th><a href="qfileinfo.html">QFileInfo</a></th><td>System-independent file information</td></tr>
<tr valign="top" class="even"><th><a href="qfilesystemwatcher.html">QFileSystemWatcher</a></th><td>Interface for monitoring files and directories for modifications</td></tr>
<tr valign="top" class="odd"><th><a href="qftp.html">QFtp</a></th><td>Implementation of the FTP protocol</td></tr>
<tr valign="top" class="even"><th><a href="qhostaddress.html">QHostAddress</a></th><td>IP address</td></tr>
<tr valign="top" class="odd"><th><a href="qhostinfo.html">QHostInfo</a></th><td>Static functions for host name lookups</td></tr>
<tr valign="top" class="even"><th><a href="qhttp.html">QHttp</a></th><td>Implementation of the HTTP protocol</td></tr>
<tr valign="top" class="odd"><th><a href="qhttpheader.html">QHttpHeader</a></th><td>Header information for HTTP</td></tr>
<tr valign="top" class="even"><th><a href="qhttprequestheader.html">QHttpRequestHeader</a></th><td>Request header information for HTTP</td></tr>
<tr valign="top" class="odd"><th><a href="qhttpresponseheader.html">QHttpResponseHeader</a></th><td>Response header information for HTTP</td></tr>
<tr valign="top" class="even"><th><a href="qiodevice.html">QIODevice</a></th><td>The base interface class of all I/O devices in Qt</td></tr>
<tr valign="top" class="odd"><th><a href="qimagereader.html">QImageReader</a></th><td>Format independent interface for reading images from files or other devices</td></tr>
<tr valign="top" class="even"><th><a href="qimagewriter.html">QImageWriter</a></th><td>Format independent interface for writing images to files or other devices</td></tr>
<tr valign="top" class="odd"><th><a href="qmacpasteboardmime.html">QMacPasteboardMime</a></th><td>Maps open-standard MIME to Mac flavors</td></tr>
<tr valign="top" class="even"><th><a href="qnetworkaddressentry.html">QNetworkAddressEntry</a></th><td>Stores one IP address supported by a network interface, along with its associated netmask and broadcast address</td></tr>
<tr valign="top" class="odd"><th><a href="qnetworkinterface.html">QNetworkInterface</a></th><td>Listing of the host's IP addresses and network interfaces</td></tr>
<tr valign="top" class="even"><th><a href="qnetworkproxy.html">QNetworkProxy</a></th><td>Network layer proxy</td></tr>
<tr valign="top" class="odd"><th><a href="qpictureio.html">QPictureIO</a></th><td>Parameters for loading and saving pictures</td></tr>
<tr valign="top" class="even"><th><a href="qprocess.html">QProcess</a></th><td>Used to start external programs and to communicate with them</td></tr>
<tr valign="top" class="odd"><th><a href="qresource.html">QResource</a></th><td>Interface for reading directly from resources</td></tr>
<tr valign="top" class="even"><th><a href="qsettings.html">QSettings</a></th><td>Persistent platform-independent application settings</td></tr>
<tr valign="top" class="odd"><th><a href="qsignalmapper.html">QSignalMapper</a></th><td>Bundles signals from identifiable senders</td></tr>
<tr valign="top" class="even"><th><a href="qsocketnotifier.html">QSocketNotifier</a></th><td>Support for monitoring activity on a file descriptor</td></tr>
<tr valign="top" class="odd"><th><a href="qtcpserver.html">QTcpServer</a></th><td>TCP-based server</td></tr>
<tr valign="top" class="even"><th><a href="qtcpsocket.html">QTcpSocket</a></th><td>TCP socket</td></tr>
<tr valign="top" class="odd"><th><a href="qtemporaryfile.html">QTemporaryFile</a></th><td>I/O device that operates on temporary files</td></tr>
<tr valign="top" class="even"><th><a href="qtextistream.html">QTextIStream</a></th><td>Convenience class for input streams</td></tr>
<tr valign="top" class="odd"><th><a href="qtextostream.html">QTextOStream</a></th><td>Convenience class for output streams</td></tr>
<tr valign="top" class="even"><th><a href="qtextstream.html">QTextStream</a></th><td>Convenient interface for reading and writing text</td></tr>
<tr valign="top" class="odd"><th><a href="qudpsocket.html">QUdpSocket</a></th><td>UDP socket</td></tr>
<tr valign="top" class="even"><th><a href="qurl.html">QUrl</a></th><td>Convenient interface for working with URLs</td></tr>
<tr valign="top" class="odd"><th><a href="qurlinfo.html">QUrlInfo</a></th><td>Stores information about URLs</td></tr>
<tr valign="top" class="even"><th><a href="qwindowsmime.html">QWindowsMime</a></th><td>Maps open-standard MIME to Window Clipboard formats</td></tr>
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