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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-26 23:32:43 -0600 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-26 23:32:43 -0600 |
| commit | ea318d1431c89e647598c510c4245c6571aa5f46 (patch) | |
| tree | 996d29b80c30d453dda86d1a23162d441628f169 /doc/html/qsessionmanager.html | |
| parent | aaf89d4b48f69c9293feb187db26362e550b5561 (diff) | |
| download | tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.tar.gz tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.zip | |
Update to latest tqt3 automated conversion
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| -rw-r--r-- | doc/html/qsessionmanager.html | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/doc/html/qsessionmanager.html b/doc/html/qsessionmanager.html deleted file mode 100644 index 04077a504..000000000 --- a/doc/html/qsessionmanager.html +++ /dev/null @@ -1,346 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> -<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qapplication.cpp:4067 --> -<html> -<head> -<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> -<title>TQSessionManager Class</title> -<style type="text/css"><!-- -fn { margin-left: 1cm; text-indent: -1cm; } -a:link { color: #004faf; text-decoration: none } -a:visited { color: #672967; text-decoration: none } -body { background: #ffffff; color: black; } ---></style> -</head> -<body> - -<table border="0" cellpadding="0" cellspacing="0" width="100%"> -<tr bgcolor="#E5E5E5"> -<td 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="annotated.html"> -<font color="#004faf">Annotated</font></a> - | <a href="groups.html"> -<font color="#004faf">Grouped Classes</font></a> - | <a href="functions.html"> -<font color="#004faf">Functions</font></a> -</td> -<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQSessionManager Class Reference</h1> - -<p>The TQSessionManager class provides access to the session manager. -<a href="#details">More...</a> -<p><tt>#include <<a href="qsessionmanager-h.html">qsessionmanager.h</a>></tt> -<p>Inherits <a href="qobject.html">TQObject</a>. -<p><a href="qsessionmanager-members.html">List of all member functions.</a> -<h2>Public Members</h2> -<ul> -<li class=fn>TQString <a href="#sessionId"><b>sessionId</b></a> () const</li> -<li class=fn>TQString <a href="#sessionKey"><b>sessionKey</b></a> () const</li> -<li class=fn>void * <a href="#handle"><b>handle</b></a> () const</li> -<li class=fn>bool <a href="#allowsInteraction"><b>allowsInteraction</b></a> ()</li> -<li class=fn>bool <a href="#allowsErrorInteraction"><b>allowsErrorInteraction</b></a> ()</li> -<li class=fn>void <a href="#release"><b>release</b></a> ()</li> -<li class=fn>void <a href="#cancel"><b>cancel</b></a> ()</li> -<li class=fn>enum <a href="#RestartHint-enum"><b>RestartHint</b></a> { RestartIfRunning, RestartAnyway, RestartImmediately, RestartNever }</li> -<li class=fn>void <a href="#setRestartHint"><b>setRestartHint</b></a> ( RestartHint hint )</li> -<li class=fn>RestartHint <a href="#restartHint"><b>restartHint</b></a> () const</li> -<li class=fn>void <a href="#setRestartCommand"><b>setRestartCommand</b></a> ( const TQStringList & command )</li> -<li class=fn>TQStringList <a href="#restartCommand"><b>restartCommand</b></a> () const</li> -<li class=fn>void <a href="#setDiscardCommand"><b>setDiscardCommand</b></a> ( const TQStringList & )</li> -<li class=fn>TQStringList <a href="#discardCommand"><b>discardCommand</b></a> () const</li> -<li class=fn>void <a href="#setManagerProperty-2"><b>setManagerProperty</b></a> ( const TQString & name, const TQString & value )</li> -<li class=fn>void <a href="#setManagerProperty"><b>setManagerProperty</b></a> ( const TQString & name, const TQStringList & value )</li> -<li class=fn>bool <a href="#isPhase2"><b>isPhase2</b></a> () const</li> -<li class=fn>void <a href="#requestPhase2"><b>requestPhase2</b></a> ()</li> -</ul> -<hr><a name="details"></a><h2>Detailed Description</h2> - - -The TQSessionManager class provides access to the session manager. -<p> - -<p> The session manager is responsible for session management, most -importantly for interruption and resumption. A "session" is a kind -of record of the state of the system, e.g. which applications were -run at start up and which applications are currently running. The -session manager is used to save the session, e.g. when the machine -is shut down; and to restore a session, e.g. when the machine is -started up. Use <a href="qsettings.html">TQSettings</a> to save and restore an individual -application's settings, e.g. window positions, recently used files, -etc. -<p> TQSessionManager provides an interface between the application and -the session manager so that the program can work well with the -session manager. In TQt, session management requests for action -are handled by the two virtual functions <a href="qapplication.html#commitData">TQApplication::commitData</a>() -and <a href="qapplication.html#saveState">TQApplication::saveState</a>(). Both provide a reference to -a session manager object as argument, to allow the application -to communicate with the session manager. -<p> During a session management action (i.e. within commitData() and -saveState()), no user interaction is possible <em>unless</em> the -application got explicit permission from the session manager. You -ask for permission by calling <a href="#allowsInteraction">allowsInteraction</a>() or, if it's really -urgent, <a href="#allowsErrorInteraction">allowsErrorInteraction</a>(). TQt does not enforce this, but the -session manager may. -<p> You can try to abort the shutdown process by calling <a href="#cancel">cancel</a>(). The -default commitData() function does this if some top-level window -rejected its closeEvent(). -<p> For sophisticated session managers provided on Unix/X11, TQSessionManager -offers further possibilites to fine-tune an application's session -management behavior: <a href="#setRestartCommand">setRestartCommand</a>(), <a href="#setDiscardCommand">setDiscardCommand</a>(), -<a href="#setRestartHint">setRestartHint</a>(), <a href="qobject.html#setProperty">setProperty</a>(), <a href="#requestPhase2">requestPhase2</a>(). See the respective -function descriptions for further details. -<p>See also <a href="application.html">Main Window and Related Classes</a> and <a href="environment.html">Environment Classes</a>. - -<hr><h2>Member Type Documentation</h2> -<h3 class=fn><a name="RestartHint-enum"></a>TQSessionManager::RestartHint</h3> -<p> This enum type defines the circumstances under which this -application wants to be restarted by the session manager. The -current values are -<ul> -<li><tt>TQSessionManager::RestartIfRunning</tt> - if the application is still running when -the session is shut down, it wants to be restarted at the start of -the next session. -<li><tt>TQSessionManager::RestartAnyway</tt> - the application wants to be started at the -start of the next session, no matter what. (This is useful for -utilities that run just after startup and then quit.) -<li><tt>TQSessionManager::RestartImmediately</tt> - the application wants to be started -immediately whenever it is not running. -<li><tt>TQSessionManager::RestartNever</tt> - the application does not want to be restarted -automatically. -</ul><p> The default hint is <a href="#RestartHint-enum">RestartIfRunning</a>. - -<hr><h2>Member Function Documentation</h2> -<h3 class=fn>bool <a name="allowsErrorInteraction"></a>TQSessionManager::allowsErrorInteraction () -</h3> - -<p> This is similar to <a href="#allowsInteraction">allowsInteraction</a>(), but also tells the session -manager that an error occurred. Session managers may give error -interaction request higher priority, which means that it is more likely -that an error interaction is permitted. However, you are still not -guaranteed that the session manager will allow interaction. -<p> <p>See also <a href="#allowsInteraction">allowsInteraction</a>(), <a href="#release">release</a>(), and <a href="#cancel">cancel</a>(). - -<h3 class=fn>bool <a name="allowsInteraction"></a>TQSessionManager::allowsInteraction () -</h3> - -<p> Asks the session manager for permission to interact with the -user. Returns TRUE if interaction is permitted; otherwise -returns FALSE. -<p> The rationale behind this mechanism is to make it possible to -synchronize user interaction during a shutdown. Advanced session -managers may ask all applications simultaneously to commit their -data, resulting in a much faster shutdown. -<p> When the interaction is completed we strongly recommend releasing the -user interaction semaphore with a call to <a href="#release">release</a>(). This way, other -applications may get the chance to interact with the user while your -application is still busy saving data. (The semaphore is implicitly -released when the application exits.) -<p> If the user decides to cancel the shutdown process during the -interaction phase, you must tell the session manager that this has -happened by calling <a href="#cancel">cancel</a>(). -<p> Here's an example of how an application's <a href="qapplication.html#commitData">TQApplication::commitData</a>() -might be implemented: -<p> <pre> -void MyApplication::commitData( TQSessionManager& sm ) { - if ( sm.<a href="#allowsInteraction">allowsInteraction</a>() ) { - switch ( TQMessageBox::<a href="qmessagebox.html#warning">warning</a>( - yourMainWindow, - <a href="qobject.html#tr">tr</a>("Application Name"), - <a href="qobject.html#tr">tr</a>("Save changes to document Foo?"), - <a href="qobject.html#tr">tr</a>("&Yes"), - <a href="qobject.html#tr">tr</a>("&No"), - <a href="qobject.html#tr">tr</a>("Cancel"), - 0, 2) ) { - case 0: // yes - sm.<a href="#release">release</a>(); - // save document here; if saving fails, call sm.<a href="#cancel">cancel</a>() - break; - case 1: // continue without saving - break; - default: // cancel - sm.<a href="#cancel">cancel</a>(); - break; - } - } else { - // we did not get permission to interact, then - // do something reasonable instead. - } -} -</pre> - -<p> If an error occurred within the application while saving its data, -you may want to try <a href="#allowsErrorInteraction">allowsErrorInteraction</a>() instead. -<p> <p>See also <a href="qapplication.html#commitData">TQApplication::commitData</a>(), <a href="#release">release</a>(), and <a href="#cancel">cancel</a>(). - -<h3 class=fn>void <a name="cancel"></a>TQSessionManager::cancel () -</h3> - -<p> Tells the session manager to cancel the shutdown process. Applications -should not call this function without first asking the user. -<p> <p>See also <a href="#allowsInteraction">allowsInteraction</a>() and <a href="#allowsErrorInteraction">allowsErrorInteraction</a>(). - -<p> -<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="discardCommand"></a>TQSessionManager::discardCommand () const -</h3> - -<p> Returns the currently set discard command. -<p> Note that if you want to iterate over the list, you should -iterate over a copy, e.g. -<pre> - <a href="qstringlist.html">TQStringList</a> list = mySession.discardCommand(); - TQStringList::Iterator it = list.<a href="qvaluelist.html#begin">begin</a>(); - while( it != list.<a href="qvaluelist.html#end">end</a>() ) { - myProcessing( *it ); - ++it; - } - </pre> - -<p> <p>See also <a href="#setDiscardCommand">setDiscardCommand</a>(), <a href="#restartCommand">restartCommand</a>(), and <a href="#setRestartCommand">setRestartCommand</a>(). - -<h3 class=fn>void * <a name="handle"></a>TQSessionManager::handle () const -</h3> - -<p> X11 only: returns a handle to the current <tt>SmcConnection</tt>. - -<h3 class=fn>bool <a name="isPhase2"></a>TQSessionManager::isPhase2 () const -</h3> - -<p> Returns TRUE if the session manager is currently performing a second -session management phase; otherwise returns FALSE. -<p> <p>See also <a href="#requestPhase2">requestPhase2</a>(). - -<h3 class=fn>void <a name="release"></a>TQSessionManager::release () -</h3> - -<p> Releases the session manager's interaction semaphore after an -interaction phase. -<p> <p>See also <a href="#allowsInteraction">allowsInteraction</a>() and <a href="#allowsErrorInteraction">allowsErrorInteraction</a>(). - -<h3 class=fn>void <a name="requestPhase2"></a>TQSessionManager::requestPhase2 () -</h3> - -<p> Requests a second session management phase for the application. The -application may then return immediately from the -<a href="qapplication.html#commitData">TQApplication::commitData</a>() or <a href="qapplication.html#saveState">TQApplication::saveState</a>() function, -and they will be called again once most or all other applications have -finished their session management. -<p> The two phases are useful for applications such as the X11 window manager -that need to store information about another application's windows -and therefore have to wait until these applications have completed their -respective session management tasks. -<p> Note that if another application has requested a second phase it -may get called before, simultaneously with, or after your -application's second phase. -<p> <p>See also <a href="#isPhase2">isPhase2</a>(). - -<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="restartCommand"></a>TQSessionManager::restartCommand () const -</h3> - -<p> Returns the currently set restart command. -<p> Note that if you want to iterate over the list, you should -iterate over a copy, e.g. -<pre> - <a href="qstringlist.html">TQStringList</a> list = mySession.restartCommand(); - TQStringList::Iterator it = list.<a href="qvaluelist.html#begin">begin</a>(); - while( it != list.<a href="qvaluelist.html#end">end</a>() ) { - myProcessing( *it ); - ++it; - } - </pre> - -<p> <p>See also <a href="#setRestartCommand">setRestartCommand</a>() and <a href="#restartHint">restartHint</a>(). - -<h3 class=fn><a href="qsessionmanager.html#RestartHint-enum">RestartHint</a> <a name="restartHint"></a>TQSessionManager::restartHint () const -</h3> - -<p> Returns the application's current restart hint. The default is -<a href="#RestartHint-enum">RestartIfRunning</a>. -<p> <p>See also <a href="#setRestartHint">setRestartHint</a>(). - -<h3 class=fn><a href="qstring.html">TQString</a> <a name="sessionId"></a>TQSessionManager::sessionId () const -</h3> - -<p> Returns the identifier of the current session. -<p> If the application has been restored from an earlier session, this -identifier is the same as it was in that earlier session. -<p> <p>See also <a href="#sessionKey">sessionKey</a>() and <a href="qapplication.html#sessionId">TQApplication::sessionId</a>(). - -<h3 class=fn><a href="qstring.html">TQString</a> <a name="sessionKey"></a>TQSessionManager::sessionKey () const -</h3> - -<p> Returns the session key in the current session. -<p> If the application has been restored from an earlier session, this -key is the same as it was when the previous session ended. -<p> The session key changes with every call of commitData() or -saveState(). -<p> <p>See also <a href="#sessionId">sessionId</a>() and <a href="qapplication.html#sessionKey">TQApplication::sessionKey</a>(). - -<h3 class=fn>void <a name="setDiscardCommand"></a>TQSessionManager::setDiscardCommand ( const <a href="qstringlist.html">TQStringList</a> & ) -</h3> - -<p> <p>See also <a href="#discardCommand">discardCommand</a>() and <a href="#setRestartCommand">setRestartCommand</a>(). - -<h3 class=fn>void <a name="setManagerProperty"></a>TQSessionManager::setManagerProperty ( const <a href="qstring.html">TQString</a> & name, const <a href="qstringlist.html">TQStringList</a> & value ) -</h3> - -<p> Low-level write access to the application's identification and state -record are kept in the session manager. -<p> The property called <em>name</em> has its value set to the string list <em>value</em>. - -<h3 class=fn>void <a name="setManagerProperty-2"></a>TQSessionManager::setManagerProperty ( const <a href="qstring.html">TQString</a> & name, const <a href="qstring.html">TQString</a> & value ) -</h3> -This is an overloaded member function, provided for convenience. It behaves essentially like the above function. -<p> Low-level write access to the application's identification and state -records are kept in the session manager. -<p> The property called <em>name</em> has its value set to the string <em>value</em>. - -<h3 class=fn>void <a name="setRestartCommand"></a>TQSessionManager::setRestartCommand ( const <a href="qstringlist.html">TQStringList</a> & command ) -</h3> - -<p> If the session manager is capable of restoring sessions it will -execute <em>command</em> in order to restore the application. The command -defaults to -<p> <pre> - appname -session id - </pre> - -<p> The <tt>-session</tt> option is mandatory; otherwise <a href="qapplication.html">TQApplication</a> cannot -tell whether it has been restored or what the current session -identifier is. See <a href="qapplication.html#isSessionRestored">TQApplication::isSessionRestored</a>() and -<a href="qapplication.html#sessionId">TQApplication::sessionId</a>() for details. -<p> If your application is very simple, it may be possible to store the -entire application state in additional command line options. This -is usually a very bad idea because command lines are often limited -to a few hundred bytes. Instead, use <a href="qsettings.html">TQSettings</a>, or temporary files -or a database for this purpose. By marking the data with the unique -<a href="#sessionId">sessionId</a>(), you will be able to restore the application in a future -session. -<p> <p>See also <a href="#restartCommand">restartCommand</a>(), <a href="#setDiscardCommand">setDiscardCommand</a>(), and <a href="#setRestartHint">setRestartHint</a>(). - -<h3 class=fn>void <a name="setRestartHint"></a>TQSessionManager::setRestartHint ( <a href="qsessionmanager.html#RestartHint-enum">RestartHint</a> hint ) -</h3> - -<p> Sets the application's restart hint to <em>hint</em>. On application -startup the hint is set to <a href="#RestartHint-enum">RestartIfRunning</a>. -<p> Note that these flags are only hints, a session manager may or may -not respect them. -<p> We recommend setting the restart hint in <a href="qapplication.html#saveState">TQApplication::saveState</a>() -because most session managers perform a checkpoint shortly after an -application's startup. -<p> <p>See also <a href="#restartHint">restartHint</a>(). - -<!-- eof --> -<hr><p> -This file is part of the <a href="index.html">TQt toolkit</a>. -Copyright © 1995-2007 -<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> -<table width=100% cellspacing=0 border=0><tr> -<td>Copyright © 2007 -<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> -<td align=right><div align=right>TQt 3.3.8</div> -</table></div></address></body> -</html> |