<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qstatusbar.cpp --> <title>QStatusBar Class | Qt Widgets 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-module.html">C++ Classes</a></td><td >QStatusBar</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#properties">Properties</a></li> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#public-slots">Public Slots</a></li> <li class="level1"><a href="#signals">Signals</a></li> <li class="level1"><a href="#protected-functions">Protected Functions</a></li> <li class="level1"><a href="#reimplemented-protected-functions">Reimplemented Protected Functions</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">QStatusBar Class</h1> <!-- $$$QStatusBar-brief --> <p>The <a href="qstatusbar.html">QStatusBar</a> class provides a horizontal bar suitable for presenting status information. <a href="#details">More...</a></p> <!-- @@@QStatusBar --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QStatusBar></span> </td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += widgets</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="qwidget.html">QWidget</a></td></tr></table></div><ul> <li><a href="qstatusbar-members.html">List of all members, including inherited members</a></li> </ul> <a name="properties"></a> <h2 id="properties">Properties</h2> <ul> <li class="fn"><b><a href="qstatusbar.html#sizeGripEnabled-prop">sizeGripEnabled</a></b> : bool</li> </ul> <ul> <li class="fn">59 properties inherited from <a href="qwidget.html#properties">QWidget</a></li> <li class="fn">1 property inherited from <a href="../qtcore/qobject.html#properties">QObject</a></li> </ul> <a name="public-functions"></a> <h2 id="public-functions">Public Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#QStatusBar">QStatusBar</a></b>(QWidget *<i>parent</i> = Q_NULLPTR)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#dtor.QStatusBar">~QStatusBar</a></b>()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a></b>(QWidget *<i>widget</i>, int <i>stretch</i> = 0)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#addWidget">addWidget</a></b>(QWidget *<i>widget</i>, int <i>stretch</i> = 0)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#currentMessage">currentMessage</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#insertPermanentWidget">insertPermanentWidget</a></b>(int <i>index</i>, QWidget *<i>widget</i>, int <i>stretch</i> = 0)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#insertWidget">insertWidget</a></b>(int <i>index</i>, QWidget *<i>widget</i>, int <i>stretch</i> = 0)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#sizeGripEnabled-prop">isSizeGripEnabled</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#removeWidget">removeWidget</a></b>(QWidget *<i>widget</i>)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#sizeGripEnabled-prop">setSizeGripEnabled</a></b>(<i>bool</i>)</td></tr> </table></div> <ul> <li class="fn">214 public functions inherited from <a href="qwidget.html#public-functions">QWidget</a></li> <li class="fn">32 public functions inherited from <a href="../qtcore/qobject.html#public-functions">QObject</a></li> <li class="fn">14 public functions inherited from <a href="../qtgui/qpaintdevice.html#public-functions">QPaintDevice</a></li> </ul> <a name="public-slots"></a> <h2 id="public-slots">Public Slots</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#clearMessage">clearMessage</a></b>()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#showMessage">showMessage</a></b>(const QString &<i>message</i>, int <i>timeout</i> = 0)</td></tr> </table></div> <ul> <li class="fn">19 public slots inherited from <a href="qwidget.html#public-slots">QWidget</a></li> <li class="fn">1 public slot inherited from <a href="../qtcore/qobject.html#public-slots">QObject</a></li> </ul> <a name="signals"></a> <h2 id="signals">Signals</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#messageChanged">messageChanged</a></b>(const QString &<i>message</i>)</td></tr> </table></div> <ul> <li class="fn">3 signals inherited from <a href="qwidget.html#signals">QWidget</a></li> <li class="fn">2 signals inherited from <a href="../qtcore/qobject.html#signals">QObject</a></li> </ul> <a name="protected-functions"></a> <h2 id="protected-functions">Protected Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#hideOrShow">hideOrShow</a></b>()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#reformat">reformat</a></b>()</td></tr> </table></div> <a name="reimplemented-protected-functions"></a> <h2 id="reimplemented-protected-functions">Reimplemented Protected Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#event">event</a></b>(QEvent *<i>e</i>)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#paintEvent">paintEvent</a></b>(QPaintEvent *<i>event</i>)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#resizeEvent">resizeEvent</a></b>(QResizeEvent *<i>e</i>)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qstatusbar.html#showEvent">showEvent</a></b>(<i>QShowEvent *</i>)</td></tr> </table></div> <ul> <li class="fn">35 protected functions inherited from <a href="qwidget.html#protected-functions">QWidget</a></li> <li class="fn">9 protected functions inherited from <a href="../qtcore/qobject.html#protected-functions">QObject</a></li> <li class="fn">1 protected function inherited from <a href="../qtgui/qpaintdevice.html#protected-functions">QPaintDevice</a></li> </ul> <h3>Additional Inherited Members</h3> <ul> <li class="fn">1 public variable inherited from <a href="../qtcore/qobject.html#public-variables">QObject</a></li> <li class="fn">5 static public members inherited from <a href="qwidget.html#static-public-members">QWidget</a></li> <li class="fn">10 static public members inherited from <a href="../qtcore/qobject.html#static-public-members">QObject</a></li> <li class="fn">1 protected slot inherited from <a href="qwidget.html#protected-slots">QWidget</a></li> <li class="fn">2 protected variables inherited from <a href="../qtcore/qobject.html#protected-variables">QObject</a></li> <li class="fn">1 protected type inherited from <a href="../qtgui/qpaintdevice.html#protected-variables">QPaintDevice</a></li> </ul> <a name="details"></a> <!-- $$$QStatusBar-description --> <div class="descr"> <h2 id="details">Detailed Description</h2> <p>The <a href="qstatusbar.html">QStatusBar</a> class provides a horizontal bar suitable for presenting status information.</p> <p>Each status indicator falls into one of three categories:</p> <ul> <li><i>Temporary</i> - briefly occupies most of the status bar. Used to explain tool tip texts or menu entries, for example.</li> <li><i>Normal</i> - occupies part of the status bar and may be hidden by temporary messages. Used to display the page and line number in a word processor, for example.</li> <li><i>Permanent</i> - is never hidden. Used for important mode indications, for example, some applications put a Caps Lock indicator in the status bar.</li> </ul> <p><a href="qstatusbar.html">QStatusBar</a> lets you display all three types of indicators.</p> <p>Typically, a request for the status bar functionality occurs in relation to a <a href="qmainwindow.html">QMainWindow</a> object. <a href="qmainwindow.html">QMainWindow</a> provides a main application window, with a menu bar, tool bars, dock widgets <i>and</i> a status bar around a large central widget. The status bar can be retrieved using the <a href="qmainwindow.html#statusBar">QMainWindow::statusBar</a>() function, and replaced using the <a href="qmainwindow.html#setStatusBar">QMainWindow::setStatusBar</a>() function.</p> <p>Use the <a href="qstatusbar.html#showMessage">showMessage</a>() slot to display a <i>temporary</i> message:</p> <pre class="cpp"> <span class="type">void</span> MainWindow<span class="operator">::</span>createStatusBar() { statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Ready"</span>)); } </pre> <p>To remove a temporary message, use the <a href="qstatusbar.html#clearMessage">clearMessage</a>() slot, or set a time limit when calling <a href="qstatusbar.html#showMessage">showMessage</a>(). For example:</p> <pre class="cpp"> <span class="type">void</span> MainWindow<span class="operator">::</span>print() { <span class="preprocessor">#if QT_CONFIG(printdialog)</span> <span class="type"><a href="../qtgui/qtextdocument.html">QTextDocument</a></span> <span class="operator">*</span>document <span class="operator">=</span> textEdit<span class="operator">-</span><span class="operator">></span>document(); <span class="type">QPrinter</span> printer; <span class="type">QPrintDialog</span> dlg(<span class="operator">&</span>printer<span class="operator">,</span> <span class="keyword">this</span>); <span class="keyword">if</span> (dlg<span class="operator">.</span>exec() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qdialog.html">QDialog</a></span><span class="operator">::</span>Accepted) { <span class="keyword">return</span>; } document<span class="operator">-</span><span class="operator">></span>print(<span class="operator">&</span>printer); statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Ready"</span>)<span class="operator">,</span> <span class="number">2000</span>); <span class="preprocessor">#endif</span> } </pre> <p>Use the <a href="qstatusbar.html#currentMessage">currentMessage</a>() function to retrieve the temporary message currently shown. The <a href="qstatusbar.html">QStatusBar</a> class also provide the <a href="qstatusbar.html#messageChanged">messageChanged</a>() signal which is emitted whenever the temporary status message changes.</p> <a name="permanent-message"></a><p><i>Normal</i> and <i>Permanent</i> messages are displayed by creating a small widget (<a href="qlabel.html">QLabel</a>, <a href="qprogressbar.html">QProgressBar</a> or even <a href="qtoolbutton.html">QToolButton</a>) and then adding it to the status bar using the <a href="qstatusbar.html#addWidget">addWidget</a>() or the <a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a>() function. Use the <a href="qstatusbar.html#removeWidget">removeWidget</a>() function to remove such messages from the status bar.</p> <pre class="cpp"> statusBar()<span class="operator">-</span><span class="operator">></span>addWidget(<span class="keyword">new</span> MyReadWriteIndication); </pre> <p>By default <a href="qstatusbar.html">QStatusBar</a> provides a <a href="qsizegrip.html">QSizeGrip</a> in the lower-right corner. You can disable it using the <a href="qstatusbar.html#sizeGripEnabled-prop">setSizeGripEnabled</a>() function. Use the <a href="qstatusbar.html#sizeGripEnabled-prop">isSizeGripEnabled</a>() function to determine the current status of the size grip.</p> <p class="centerAlign"><img src="images/fusion-statusbar-sizegrip.png" alt="A status bar shown in the Fusion widget style" /></p></div> <p><b>See also </b><a href="qmainwindow.html">QMainWindow</a>, <a href="../qtgui/qstatustipevent.html">QStatusTipEvent</a>, <a href="guibooks.html#fowler">GUI Design Handbook: Status Bar</a>, and <a href="qtwidgets-mainwindows-application-example.html">Application Example</a>.</p> <!-- @@@QStatusBar --> <div class="prop"> <h2>Property Documentation</h2> <!-- $$$sizeGripEnabled-prop$$$isSizeGripEnabled$$$setSizeGripEnabledbool --> <h3 class="fn" id="sizeGripEnabled-prop"><a name="sizeGripEnabled-prop"></a><span class="name">sizeGripEnabled</span> : <span class="type">bool</span></h3> <p>This property holds whether the <a href="qsizegrip.html">QSizeGrip</a> in the bottom-right corner of the status bar is enabled</p> <p>The size grip is enabled by default.</p> <p><b>Access functions:</b></p> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft topAlign rightAlign"> bool </td><td class="memItemRight bottomAlign"><span class="name"><b>isSizeGripEnabled</b></span>() const</td></tr> <tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setSizeGripEnabled</b></span>(<i>bool</i>)</td></tr> </table></div> <!-- @@@sizeGripEnabled --> </div> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QStatusBar[overload1]$$$QStatusBarQWidget* --> <h3 class="fn" id="QStatusBar"><a name="QStatusBar"></a>QStatusBar::<span class="name">QStatusBar</span>(<span class="type"><a href="qwidget.html#QWidget">QWidget</a></span> *<i>parent</i> = Q_NULLPTR)</h3> <p>Constructs a status bar with a size grip and the given <i>parent</i>.</p> <p><b>See also </b><a href="qstatusbar.html#sizeGripEnabled-prop">setSizeGripEnabled</a>().</p> <!-- @@@QStatusBar --> <!-- $$$~QStatusBar[overload1]$$$~QStatusBar --> <h3 class="fn" id="dtor.QStatusBar"><a name="dtor.QStatusBar"></a><code>[virtual] </code>QStatusBar::<span class="name">~QStatusBar</span>()</h3> <p>Destroys this status bar and frees any allocated resources and child widgets.</p> <!-- @@@~QStatusBar --> <!-- $$$addPermanentWidget[overload1]$$$addPermanentWidgetQWidget*int --> <h3 class="fn" id="addPermanentWidget"><a name="addPermanentWidget"></a><span class="type">void</span> QStatusBar::<span class="name">addPermanentWidget</span>(<span class="type"><a href="qwidget.html#QWidget">QWidget</a></span> *<i>widget</i>, <span class="type">int</span> <i>stretch</i> = 0)</h3> <p>Adds the given <i>widget</i> permanently to this status bar, reparenting the widget if it isn't already a child of this <a href="qstatusbar.html">QStatusBar</a> object. The <i>stretch</i> parameter is used to compute a suitable size for the given <i>widget</i> as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.</p> <p>Permanently means that the widget may not be obscured by temporary messages. It is is located at the far right of the status bar.</p> <p><b>See also </b><a href="qstatusbar.html#insertPermanentWidget">insertPermanentWidget</a>(), <a href="qstatusbar.html#removeWidget">removeWidget</a>(), and <a href="qstatusbar.html#addWidget">addWidget</a>().</p> <!-- @@@addPermanentWidget --> <!-- $$$addWidget[overload1]$$$addWidgetQWidget*int --> <h3 class="fn" id="addWidget"><a name="addWidget"></a><span class="type">void</span> QStatusBar::<span class="name">addWidget</span>(<span class="type"><a href="qwidget.html#QWidget">QWidget</a></span> *<i>widget</i>, <span class="type">int</span> <i>stretch</i> = 0)</h3> <p>Adds the given <i>widget</i> to this status bar, reparenting the widget if it isn't already a child of this <a href="qstatusbar.html">QStatusBar</a> object. The <i>stretch</i> parameter is used to compute a suitable size for the given <i>widget</i> as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.</p> <p>The widget is located to the far left of the first permanent widget (see <a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a>()) and may be obscured by temporary messages.</p> <p><b>See also </b><a href="qstatusbar.html#insertWidget">insertWidget</a>(), <a href="qstatusbar.html#removeWidget">removeWidget</a>(), and <a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a>().</p> <!-- @@@addWidget --> <!-- $$$clearMessage[overload1]$$$clearMessage --> <h3 class="fn" id="clearMessage"><a name="clearMessage"></a><code>[slot] </code><span class="type">void</span> QStatusBar::<span class="name">clearMessage</span>()</h3> <p>Removes any temporary message being shown.</p> <p><b>See also </b><a href="qstatusbar.html#currentMessage">currentMessage</a>(), <a href="qstatusbar.html#showMessage">showMessage</a>(), and <a href="qstatusbar.html#removeWidget">removeWidget</a>().</p> <!-- @@@clearMessage --> <!-- $$$currentMessage[overload1]$$$currentMessage --> <h3 class="fn" id="currentMessage"><a name="currentMessage"></a><span class="type"><a href="../qtcore/qstring.html">QString</a></span> QStatusBar::<span class="name">currentMessage</span>() const</h3> <p>Returns the temporary message currently shown, or an empty string if there is no such message.</p> <p><b>See also </b><a href="qstatusbar.html#showMessage">showMessage</a>().</p> <!-- @@@currentMessage --> <!-- $$$event[overload1]$$$eventQEvent* --> <h3 class="fn" id="event"><a name="event"></a><code>[virtual protected] </code><span class="type">bool</span> QStatusBar::<span class="name">event</span>(<span class="type"><a href="../qtcore/qevent.html">QEvent</a></span> *<i>e</i>)</h3> <p>Reimplemented from <a href="../qtcore/qobject.html#event">QObject::event</a>().</p> <!-- @@@event --> <!-- $$$hideOrShow[overload1]$$$hideOrShow --> <h3 class="fn" id="hideOrShow"><a name="hideOrShow"></a><code>[protected] </code><span class="type">void</span> QStatusBar::<span class="name">hideOrShow</span>()</h3> <p>Ensures that the right widgets are visible.</p> <p>Used by the <a href="qstatusbar.html#showMessage">showMessage</a>() and <a href="qstatusbar.html#clearMessage">clearMessage</a>() functions.</p> <!-- @@@hideOrShow --> <!-- $$$insertPermanentWidget[overload1]$$$insertPermanentWidgetintQWidget*int --> <h3 class="fn" id="insertPermanentWidget"><a name="insertPermanentWidget"></a><span class="type">int</span> QStatusBar::<span class="name">insertPermanentWidget</span>(<span class="type">int</span> <i>index</i>, <span class="type"><a href="qwidget.html#QWidget">QWidget</a></span> *<i>widget</i>, <span class="type">int</span> <i>stretch</i> = 0)</h3> <p>Inserts the given <i>widget</i> at the given <i>index</i> permanently to this status bar, reparenting the widget if it isn't already a child of this <a href="qstatusbar.html">QStatusBar</a> object. If <i>index</i> is out of range, the widget is appended (in which case it is the actual index of the widget that is returned).</p> <p>The <i>stretch</i> parameter is used to compute a suitable size for the given <i>widget</i> as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.</p> <p>Permanently means that the widget may not be obscured by temporary messages. It is is located at the far right of the status bar.</p> <p>This function was introduced in Qt 4.2.</p> <p><b>See also </b><a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a>(), <a href="qstatusbar.html#removeWidget">removeWidget</a>(), and <a href="qstatusbar.html#addWidget">addWidget</a>().</p> <!-- @@@insertPermanentWidget --> <!-- $$$insertWidget[overload1]$$$insertWidgetintQWidget*int --> <h3 class="fn" id="insertWidget"><a name="insertWidget"></a><span class="type">int</span> QStatusBar::<span class="name">insertWidget</span>(<span class="type">int</span> <i>index</i>, <span class="type"><a href="qwidget.html#QWidget">QWidget</a></span> *<i>widget</i>, <span class="type">int</span> <i>stretch</i> = 0)</h3> <p>Inserts the given <i>widget</i> at the given <i>index</i> to this status bar, reparenting the widget if it isn't already a child of this <a href="qstatusbar.html">QStatusBar</a> object. If <i>index</i> is out of range, the widget is appended (in which case it is the actual index of the widget that is returned).</p> <p>The <i>stretch</i> parameter is used to compute a suitable size for the given <i>widget</i> as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.</p> <p>The widget is located to the far left of the first permanent widget (see <a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a>()) and may be obscured by temporary messages.</p> <p>This function was introduced in Qt 4.2.</p> <p><b>See also </b><a href="qstatusbar.html#addWidget">addWidget</a>(), <a href="qstatusbar.html#removeWidget">removeWidget</a>(), and <a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a>().</p> <!-- @@@insertWidget --> <!-- $$$messageChanged[overload1]$$$messageChangedconstQString& --> <h3 class="fn" id="messageChanged"><a name="messageChanged"></a><code>[signal] </code><span class="type">void</span> QStatusBar::<span class="name">messageChanged</span>(const <span class="type"><a href="../qtcore/qstring.html">QString</a></span> &<i>message</i>)</h3> <p>This signal is emitted whenever the temporary status message changes. The new temporary message is passed in the <i>message</i> parameter which is a null-string when the message has been removed.</p> <p><b>See also </b><a href="qstatusbar.html#showMessage">showMessage</a>() and <a href="qstatusbar.html#clearMessage">clearMessage</a>().</p> <!-- @@@messageChanged --> <!-- $$$paintEvent[overload1]$$$paintEventQPaintEvent* --> <h3 class="fn" id="paintEvent"><a name="paintEvent"></a><code>[virtual protected] </code><span class="type">void</span> QStatusBar::<span class="name">paintEvent</span>(<span class="type"><a href="../qtgui/qpaintevent.html">QPaintEvent</a></span> *<i>event</i>)</h3> <p>Reimplemented from <a href="qwidget.html#paintEvent">QWidget::paintEvent</a>().</p> <p>Shows the temporary message, if appropriate, in response to the paint <i>event</i>.</p> <!-- @@@paintEvent --> <!-- $$$reformat[overload1]$$$reformat --> <h3 class="fn" id="reformat"><a name="reformat"></a><code>[protected] </code><span class="type">void</span> QStatusBar::<span class="name">reformat</span>()</h3> <p>Changes the status bar's appearance to account for item changes.</p> <p>Special subclasses may need this function, but geometry management will usually take care of any necessary rearrangements.</p> <!-- @@@reformat --> <!-- $$$removeWidget[overload1]$$$removeWidgetQWidget* --> <h3 class="fn" id="removeWidget"><a name="removeWidget"></a><span class="type">void</span> QStatusBar::<span class="name">removeWidget</span>(<span class="type"><a href="qwidget.html#QWidget">QWidget</a></span> *<i>widget</i>)</h3> <p>Removes the specified <i>widget</i> from the status bar.</p> <p><b>Note: </b>This function does not delete the widget but <i>hides</i> it. To add the widget again, you must call both the <a href="qstatusbar.html#addWidget">addWidget</a>() and <a href="qwidget.html#show">show</a>() functions.</p><p><b>See also </b><a href="qstatusbar.html#addWidget">addWidget</a>(), <a href="qstatusbar.html#addPermanentWidget">addPermanentWidget</a>(), and <a href="qstatusbar.html#clearMessage">clearMessage</a>().</p> <!-- @@@removeWidget --> <!-- $$$resizeEvent[overload1]$$$resizeEventQResizeEvent* --> <h3 class="fn" id="resizeEvent"><a name="resizeEvent"></a><code>[virtual protected] </code><span class="type">void</span> QStatusBar::<span class="name">resizeEvent</span>(<span class="type"><a href="../qtgui/qresizeevent.html">QResizeEvent</a></span> *<i>e</i>)</h3> <p>Reimplemented from <a href="qwidget.html#resizeEvent">QWidget::resizeEvent</a>().</p> <!-- @@@resizeEvent --> <!-- $$$showEvent[overload1]$$$showEventQShowEvent* --> <h3 class="fn" id="showEvent"><a name="showEvent"></a><code>[virtual protected] </code><span class="type">void</span> QStatusBar::<span class="name">showEvent</span>(<i>QShowEvent *</i>)</h3> <p>Reimplemented from <a href="qwidget.html#showEvent">QWidget::showEvent</a>().</p> <!-- @@@showEvent --> <!-- $$$showMessage[overload1]$$$showMessageconstQString&int --> <h3 class="fn" id="showMessage"><a name="showMessage"></a><code>[slot] </code><span class="type">void</span> QStatusBar::<span class="name">showMessage</span>(const <span class="type"><a href="../qtcore/qstring.html">QString</a></span> &<i>message</i>, <span class="type">int</span> <i>timeout</i> = 0)</h3> <p>Hides the normal status indications and displays the given <i>message</i> for the specified number of milli-seconds (<i>timeout</i>). If <i>timeout</i> is 0 (default), the <i>message</i> remains displayed until the <a href="qstatusbar.html#clearMessage">clearMessage</a>() slot is called or until the showMessage() slot is called again to change the message.</p> <p>Note that showMessage() is called to show temporary explanations of tool tip texts, so passing a <i>timeout</i> of 0 is not sufficient to display a <a href="qstatusbar.html#permanent-message">permanent message</a>.</p> <p><b>See also </b><a href="qstatusbar.html#messageChanged">messageChanged</a>(), <a href="qstatusbar.html#currentMessage">currentMessage</a>(), and <a href="qstatusbar.html#clearMessage">clearMessage</a>().</p> <!-- @@@showMessage --> </div> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>