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QSocketNotifier
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  SUMMARY:&nbsp;<A HREF="#nested_class_summary">NESTED</A>&nbsp;|&nbsp;<A HREF="#field_summary">FIELD</A>&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
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com.trolltech.qt.core</FONT>
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Class QSocketNotifier</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../com/trolltech/qt/QSignalEmitter.html" title="class in com.trolltech.qt">com.trolltech.qt.QSignalEmitter</A>
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              <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.trolltech.qt.core.QSocketNotifier</B>
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<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/trolltech/qt/QtJambiInterface.html" title="interface in com.trolltech.qt">QtJambiInterface</A></DD>
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<DT><PRE>public class <B>QSocketNotifier</B><DT>extends <A HREF="../../../../com/trolltech/qt/core/QObject.html" title="class in com.trolltech.qt.core">QObject</A></DL>
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<P>
<p>The <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a> class provides support for monitoring activity on a file descriptor.</p>
<p>The <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a> makes it possible to integrate Qt's event loop with other event loops based on file descriptors. For example, the CORBA Framework</tt> uses it to process CORBA events. File descriptor action is detected in Qt's main event loop (QCoreApplication::exec()).</p>
<a name="write-notifiers"></a><p>Once you have opened a device using a low-level (usually platform-specific) API, you can create a socket notifier to monitor the file descriptor. The socket notifier is enabled by default, i.e&#x2e; it emits the <a href="QSocketNotifier.html#activated(int)"><tt>activated</tt></a> signal whenever a socket event corresponding to its type occurs. Connect the <a href="QSocketNotifier.html#activated(int)"><tt>activated</tt></a> signal to the slot you want to be called when an event corresponding to your socket notifier's type occurs.</p>
<p>There are three types of socket notifiers: read, write, and exception. The type is described by the <a href="QSocketNotifier.html#Type-enum">Type</tt></a> enum, and must be specified when constructing the socket notifier. After construction it can be determined using the <a href="QSocketNotifier.html#type()"><tt>type</tt></a> function. Note that if you need to monitor both reads and writes for the same file descriptor, you must create two socket notifiers. Note also that it is not possible to install two socket notifiers of the same type (<a href="QSocketNotifier.html#Type-enum">Read</tt></a>, <a href="QSocketNotifier.html#Type-enum">Write</tt></a>, <a href="QSocketNotifier.html#Type-enum">Exception</tt></a>) on the same socket.</p>
<p>The <a href="QSocketNotifier.html#setEnabled(boolean)"><tt>setEnabled</tt></a> function allows you to disable as well as enable the socket notifier. It is generally advisable to explicitly enable or disable the socket notifier, especially for write notifiers. A disabled notifier ignores socket events (the same effect as not creating the socket notifier). Use the <a href="QSocketNotifier.html#isEnabled()"><tt>isEnabled</tt></a> function to determine the notifier's current status.</p>
<p>Finally, you can use the <a href="QSocketNotifier.html#socket()"><tt>socket</tt></a> function to retrieve the socket identifier. Although the class is called <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a>, it is normally used for other types of devices than sockets. <a href="%2E%2E/network/QTcpSocket.html"><tt>QTcpSocket</tt></a> and <a href="%2E%2E/network/QUdpSocket.html"><tt>QUdpSocket</tt></a> provide notification through signals, so there is normally no need to use a <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a> on them.</p>
<a name="notes-for-windows-users"></a>
<h3>Notes for Windows Users</h3>
<p>The socket passed to <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a> will become non-blocking, even if it was created as a blocking socket. The <a href="QSocketNotifier.html#activated(int)"><tt>activated</tt></a> signal is sometimes triggered by high general activity on the host, even if there is nothing to read. A subsequent read from the socket can then fail, the error indicating that there is no data available (e.g&#x2e;, <tt>WSAEWOULDBLOCK</tt>). This is an operating system limitation, and not a bug in <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a>.</p>
<p>To ensure that the socket notifier handles read notifications correctly, follow these steps when you receive a notification:</p>
<ol type="1">
<li>Disable the notifier.</li>
<li>Read data from the socket.</li>
<li>Re-enable the notifier if you are interested in more data (such as after having written a new command to a remote server).</li>
</ol>
<p>To ensure that the socket notifier handles write notifications correctly, follow these steps when you receive a notification:</p>
<ol type="1">
<li>Disable the notifier.</li>
<li>Write as much data as you can (before <tt>EWOULDBLOCK</tt> is returned).</li>
<li>Re-enable notifier if you have more data to write.</li>
</ol>
<p><b>Further information:</b> On Windows, Qt always disables the notifier after getting a notification, and only re-enables it if more data is expected. For example, if data is read from the socket and it can be used to read more, or if reading or writing is not possible because the socket would block, in which case it is necessary to wait before attempting to read or write again.</p>
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<P>
<DL>
<DT><B>See Also:</B><DD><a href="QFile.html"><tt>QFile</tt></a>, 
<a href="QProcess.html"><tt>QProcess</tt></a>, 
<a href="%2E%2E/network/QTcpSocket.html"><tt>QTcpSocket</tt></a>, 
<a href="%2E%2E/network/QUdpSocket.html"><tt>QUdpSocket</tt></a></DL>
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<CODE>static&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.Type.html" title="enum in com.trolltech.qt.core">QSocketNotifier.Type</A></B></CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This enum describes the various types of events that a socket notifier can recognize.</TD>
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<TH ALIGN="left"><B>Nested classes/interfaces inherited from class com.trolltech.qt.<A HREF="../../../../com/trolltech/qt/QSignalEmitter.html" title="class in com.trolltech.qt">QSignalEmitter</A></B></TH>
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<TD><CODE><A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal0.html" title="class in com.trolltech.qt">QSignalEmitter.Signal0</A>, <A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal1.html" title="class in com.trolltech.qt">QSignalEmitter.Signal1</A>&lt;<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal1.html" title="type parameter in QSignalEmitter.Signal1">A</A>&gt;, <A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal2.html" title="class in com.trolltech.qt">QSignalEmitter.Signal2</A>&lt;<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal2.html" title="type parameter in QSignalEmitter.Signal2">A</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal2.html" title="type parameter in QSignalEmitter.Signal2">B</A>&gt;, <A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal3.html" title="class in com.trolltech.qt">QSignalEmitter.Signal3</A>&lt;<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal3.html" title="type parameter in 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QSignalEmitter.Signal9">B</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal9.html" title="type parameter in QSignalEmitter.Signal9">C</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal9.html" title="type parameter in QSignalEmitter.Signal9">D</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal9.html" title="type parameter in QSignalEmitter.Signal9">E</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal9.html" title="type parameter in QSignalEmitter.Signal9">F</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal9.html" title="type parameter in QSignalEmitter.Signal9">G</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal9.html" title="type parameter in QSignalEmitter.Signal9">H</A>,<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal9.html" title="type parameter in QSignalEmitter.Signal9">I</A>&gt;</CODE></TD>
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<CODE>&nbsp;<A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal1.html" title="class in com.trolltech.qt">QSignalEmitter.Signal1</A>&lt;java.lang.Integer&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#activated">activated</A></B></CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This signal is emitted whenever the socket notifier is enabled and a socket event corresponding to its <a href="QSocketNotifier.html#Type-enum">type</tt></a> occurs.</TD>
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<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type)">QSocketNotifier</A></B>(int&nbsp;socket,
                <A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.Type.html" title="enum in com.trolltech.qt.core">QSocketNotifier.Type</A>&nbsp;arg__2)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Equivalent to <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a>(<tt>socket</tt>, <tt>arg__2</tt>, 0).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)">QSocketNotifier</A></B>(int&nbsp;socket,
                <A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.Type.html" title="enum in com.trolltech.qt.core">QSocketNotifier.Type</A>&nbsp;arg__2,
                <A HREF="../../../../com/trolltech/qt/core/QObject.html" title="class in com.trolltech.qt.core">QObject</A>&nbsp;parent)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a socket notifier with the given <tt>parent</tt>.</TD>
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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#event(com.trolltech.qt.core.QEvent)">event</A></B>(<A HREF="../../../../com/trolltech/qt/core/QEvent.html" title="class in com.trolltech.qt.core">QEvent</A>&nbsp;arg__1)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This function is reimplemented for internal reasons.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html" title="class in com.trolltech.qt.core">QSocketNotifier</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#fromNativePointer(com.trolltech.qt.QNativePointer)">fromNativePointer</A></B>(<A HREF="../../../../com/trolltech/qt/QNativePointer.html" title="class in com.trolltech.qt">QNativePointer</A>&nbsp;nativePointer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This function returns the QSocketNotifier instance pointed to by nativePointer</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#isEnabled()">isEnabled</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns true if the notifier is enabled; otherwise returns false.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#setEnabled(boolean)">setEnabled</A></B>(boolean&nbsp;arg__1)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If <tt>arg__1</tt> is true, the notifier is enabled; otherwise the notifier is disabled.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#socket()">socket</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the socket identifier specified to the constructor.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.Type.html" title="enum in com.trolltech.qt.core">QSocketNotifier.Type</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html#type()">type</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the socket event type specified to the constructor.</TD>
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&nbsp;<A NAME="methods_inherited_from_class_com.trolltech.qt.core.QObject"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Methods inherited from class com.trolltech.qt.core.<A HREF="../../../../com/trolltech/qt/core/QObject.html" title="class in com.trolltech.qt.core">QObject</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/trolltech/qt/core/QObject.html#blockSignals(boolean)">blockSignals</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#childEvent(com.trolltech.qt.core.QChildEvent)">childEvent</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#children()">children</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#connectSlotsByName()">connectSlotsByName</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#customEvent(com.trolltech.qt.core.QEvent)">customEvent</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#disposeLater()">disposeLater</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#dumpObjectInfo()">dumpObjectInfo</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#dumpObjectTree()">dumpObjectTree</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#dynamicPropertyNames()">dynamicPropertyNames</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#eventFilter(com.trolltech.qt.core.QObject, com.trolltech.qt.core.QEvent)">eventFilter</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#findChild()">findChild</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#findChild(java.lang.Class)">findChild</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#findChild(java.lang.Class, java.lang.String)">findChild</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#findChildren()">findChildren</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#findChildren(java.lang.Class)">findChildren</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#findChildren(java.lang.Class, com.trolltech.qt.core.QRegExp)">findChildren</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#findChildren(java.lang.Class, java.lang.String)">findChildren</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#installEventFilter(com.trolltech.qt.core.QObject)">installEventFilter</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#isWidgetType()">isWidgetType</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#killTimer(int)">killTimer</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#moveToThread(java.lang.Thread)">moveToThread</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#objectName()">objectName</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#parent()">parent</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#property(java.lang.String)">property</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#removeEventFilter(com.trolltech.qt.core.QObject)">removeEventFilter</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#setObjectName(java.lang.String)">setObjectName</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#setParent(com.trolltech.qt.core.QObject)">setParent</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#setProperty(java.lang.String, java.lang.Object)">setProperty</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#signalsBlocked()">signalsBlocked</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#startTimer(int)">startTimer</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#thread()">thread</A>, <A HREF="../../../../com/trolltech/qt/core/QObject.html#timerEvent(com.trolltech.qt.core.QTimerEvent)">timerEvent</A></CODE></TD>
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</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/trolltech/qt/QtJambiObject.html#dispose()">dispose</A>, <A HREF="../../../../com/trolltech/qt/QtJambiObject.html#disposed()">disposed</A>, <A HREF="../../../../com/trolltech/qt/QtJambiObject.html#finalize()">finalize</A>, <A HREF="../../../../com/trolltech/qt/QtJambiObject.html#reassignNativeResources(com.trolltech.qt.QtJambiObject, java.lang.Class)">reassignNativeResources</A>, <A HREF="../../../../com/trolltech/qt/QtJambiObject.html#tr(java.lang.String)">tr</A>, <A HREF="../../../../com/trolltech/qt/QtJambiObject.html#tr(java.lang.String, java.lang.String)">tr</A>, <A HREF="../../../../com/trolltech/qt/QtJambiObject.html#tr(java.lang.String, java.lang.String, int)">tr</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_com.trolltech.qt.QSignalEmitter"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class com.trolltech.qt.<A HREF="../../../../com/trolltech/qt/QSignalEmitter.html" title="class in com.trolltech.qt">QSignalEmitter</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/trolltech/qt/QSignalEmitter.html#disconnect()">disconnect</A>, <A HREF="../../../../com/trolltech/qt/QSignalEmitter.html#disconnect(java.lang.Object)">disconnect</A>, <A HREF="../../../../com/trolltech/qt/QSignalEmitter.html#signalSender()">signalSender</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_com.trolltech.qt.QtJambiInterface"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from interface com.trolltech.qt.<A HREF="../../../../com/trolltech/qt/QtJambiInterface.html" title="interface in com.trolltech.qt">QtJambiInterface</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/trolltech/qt/QtJambiInterface.html#disableGarbageCollection()">disableGarbageCollection</A>, <A HREF="../../../../com/trolltech/qt/QtJambiInterface.html#nativeId()">nativeId</A>, <A HREF="../../../../com/trolltech/qt/QtJambiInterface.html#nativePointer()">nativePointer</A>, <A HREF="../../../../com/trolltech/qt/QtJambiInterface.html#reenableGarbageCollection()">reenableGarbageCollection</A>, <A HREF="../../../../com/trolltech/qt/QtJambiInterface.html#setJavaOwnership()">setJavaOwnership</A></CODE></TD>
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<P>

<!-- ============ FIELD DETAIL =========== -->

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<A NAME="activated"><!-- --></A><H3>
activated</H3>
<PRE>
public final <A HREF="../../../../com/trolltech/qt/QSignalEmitter.Signal1.html" title="class in com.trolltech.qt">QSignalEmitter.Signal1</A>&lt;java.lang.Integer&gt; <B>activated</B></PRE>
<DL>
<DD><p>This signal is emitted whenever the socket notifier is enabled and a socket event corresponding to its <a href="QSocketNotifier.html#Type-enum">type</tt></a> occurs.</p>
<p>The socket identifier is passed in the <tt>socket</tt> parameter.</p>
<dl>
<dt><b>Compatible Slot Signatures:</b></dt>
<dd><tt>void mySlot(int socket)</tt></dd>
<dd><tt>void mySlot()</tt></dd>
</dl>
<dl>
<dt><b>See Also:</b></dt>
<dd><a href="QSocketNotifier.html#type()"><tt>type</tt></a>, <a href="QSocketNotifier.html#socket()"><tt>socket</tt></a></dd>
</dl>
<P>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type)"><!-- --></A><H3>
QSocketNotifier</H3>
<PRE>
public <B>QSocketNotifier</B>(int&nbsp;socket,
                       <A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.Type.html" title="enum in com.trolltech.qt.core">QSocketNotifier.Type</A>&nbsp;arg__2)</PRE>
<DL>
<DD><p>Equivalent to <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a>(<tt>socket</tt>, <tt>arg__2</tt>, 0).
<P>
</DL>
<HR>

<A NAME="QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><!-- --></A><H3>
QSocketNotifier</H3>
<PRE>
public <B>QSocketNotifier</B>(int&nbsp;socket,
                       <A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.Type.html" title="enum in com.trolltech.qt.core">QSocketNotifier.Type</A>&nbsp;arg__2,
                       <A HREF="../../../../com/trolltech/qt/core/QObject.html" title="class in com.trolltech.qt.core">QObject</A>&nbsp;parent)</PRE>
<DL>
<DD><p>Constructs a socket notifier with the given <tt>parent</tt>. It enables the <tt>socket</tt>, and watches for events of the given <tt>arg__2</tt>.</p>
<p>It is generally advisable to explicitly enable or disable the socket notifier, especially for write notifiers.</p>
<p><b>Note for Windows users:</b> The socket passed to <a href="QSocketNotifier.html#QSocketNotifier(int, com.trolltech.qt.core.QSocketNotifier.Type, com.trolltech.qt.core.QObject)"><tt>QSocketNotifier</tt></a> will become non-blocking, even if it was created as a blocking socket.</p>
<P>
<DL>
<DT><B>See Also:</B><DD><a href="QSocketNotifier.html#setEnabled(boolean)"><tt>setEnabled</tt></a>, 
<a href="QSocketNotifier.html#isEnabled()"><tt>isEnabled</tt></a></DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<A NAME="isEnabled()"><!-- --></A><H3>
isEnabled</H3>
<PRE>
public final boolean <B>isEnabled</B>()</PRE>
<DL>
<DD><p>Returns true if the notifier is enabled; otherwise returns false.</p>
<P>
<DD><DL>
<DT><B>See Also:</B><DD><a href="QSocketNotifier.html#setEnabled(boolean)"><tt>setEnabled</tt></a></DL>
</DD>
</DL>
<HR>

<A NAME="setEnabled(boolean)"><!-- --></A><H3>
setEnabled</H3>
<PRE>
public final void <B>setEnabled</B>(boolean&nbsp;arg__1)</PRE>
<DL>
<DD><p>If <tt>arg__1</tt> is true, the notifier is enabled; otherwise the notifier is disabled.</p>
<p>The notifier is enabled by default, i.e&#x2e; it emits the <a href="QSocketNotifier.html#activated(int)"><tt>activated</tt></a> signal whenever a socket event corresponding to its <a href="QSocketNotifier.html#type()">type</tt></a> occurs. If it is disabled, it ignores socket events (the same effect as not creating the socket notifier).</p>
<p>Write notifiers should normally be disabled immediately after the <a href="QSocketNotifier.html#activated(int)"><tt>activated</tt></a> signal has been emitted</p>
<P>
<DD><DL>
<DT><B>See Also:</B><DD><a href="QSocketNotifier.html#isEnabled()"><tt>isEnabled</tt></a>, 
<a href="QSocketNotifier.html#activated(int)"><tt>activated</tt></a></DL>
</DD>
</DL>
<HR>

<A NAME="socket()"><!-- --></A><H3>
socket</H3>
<PRE>
public final int <B>socket</B>()</PRE>
<DL>
<DD><p>Returns the socket identifier specified to the constructor.</p>
<P>
<DD><DL>
<DT><B>See Also:</B><DD><a href="QSocketNotifier.html#type()"><tt>type</tt></a></DL>
</DD>
</DL>
<HR>

<A NAME="type()"><!-- --></A><H3>
type</H3>
<PRE>
public final <A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.Type.html" title="enum in com.trolltech.qt.core">QSocketNotifier.Type</A> <B>type</B>()</PRE>
<DL>
<DD><p>Returns the socket event type specified to the constructor.</p>
<P>
<DD><DL>
<DT><B>See Also:</B><DD><a href="QSocketNotifier.html#socket()"><tt>socket</tt></a></DL>
</DD>
</DL>
<HR>

<A NAME="event(com.trolltech.qt.core.QEvent)"><!-- --></A><H3>
event</H3>
<PRE>
public boolean <B>event</B>(<A HREF="../../../../com/trolltech/qt/core/QEvent.html" title="class in com.trolltech.qt.core">QEvent</A>&nbsp;arg__1)</PRE>
<DL>
<DD><p>This function is reimplemented for internal reasons.</p>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/trolltech/qt/core/QObject.html#event(com.trolltech.qt.core.QEvent)">event</A></CODE> in class <CODE><A HREF="../../../../com/trolltech/qt/core/QObject.html" title="class in com.trolltech.qt.core">QObject</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><a href="QObject.html#installEventFilter(com.trolltech.qt.core.QObject)"><tt>installEventFilter</tt></a>, 
<a href="QObject.html#timerEvent(com.trolltech.qt.core.QTimerEvent)"><tt>timerEvent</tt></a>, 
<tt>QApplication::sendEvent</tt>, 
<tt>QApplication::postEvent</tt>, 
<tt>QWidget::event</tt></DL>
</DD>
</DL>
<HR>

<A NAME="fromNativePointer(com.trolltech.qt.QNativePointer)"><!-- --></A><H3>
fromNativePointer</H3>
<PRE>
public static <A HREF="../../../../com/trolltech/qt/core/QSocketNotifier.html" title="class in com.trolltech.qt.core">QSocketNotifier</A> <B>fromNativePointer</B>(<A HREF="../../../../com/trolltech/qt/QNativePointer.html" title="class in com.trolltech.qt">QNativePointer</A>&nbsp;nativePointer)</PRE>
<DL>
<DD>This function returns the QSocketNotifier instance pointed to by nativePointer
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>nativePointer</CODE> - the QNativePointer of which object should be returned.</DL>
</DD>
</DL>
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