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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Qt Toolkit - QMenuBar Class</title><style type="text/css"><!--
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<h1 align=center>QMenuBar Class Reference</h1><br clear="all">
<p>
The QMenuBar class provides a horizontal menu bar.
<a href="#details">More...</a>
<p>
<code>#include &lt;<a href="qmenubar-h.html">qmenubar.h</a>&gt;</code>
<p>
Inherits <a href="qframe.html">QFrame</a> and <a href="qmenudata.html">QMenuData</a>.
<p><a href="qmenubar-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class="fn"><a href="#a44cc0"><b>QMenuBar</b></a>(QWidget*parent=0, constchar*name=0)</div>
<li><div class="fn"><a href="#c35222"><b>~QMenuBar</b></a>()</div>
<li><div class="fn">virtualvoid<b>updateItem</b>(intid)(internal)</div>
<li><div class="fn">virtualvoid<a href="#572327"><b>show</b></a>()</div>
<li><div class="fn">virtualvoid<a href="#64310d"><b>hide</b></a>()</div>
<li><div class="fn">virtualbool<a href="#041caa"><b>eventFilter</b></a>(QObject*, QEvent*)</div>
<li><div class="fn">virtualint<a href="#ecc869"><b>heightForWidth</b></a>(int)const</div>
<li><div class="fn">enum<a href="#Separator"><b>Separator</b></a>{Never=0, InWindowsStyle=1}</div>
<li><div class="fn">Separator<a href="#ff48a9"><b>separator</b></a>()const</div>
<li><div class="fn">virtualvoid<a href="#815978"><b>setSeparator</b></a>(Separatorwhen)</div>
<li><div class="fn">void<a href="#db05df"><b>setDefaultUp</b></a>(bool)</div>
<li><div class="fn">bool<a href="#98ec02"><b>isDefaultUp</b></a>()const</div>
</ul>
<h2>Signals</h2>
<ul>
<li><div class="fn">void<a href="#d2d6e0"><b>activated</b></a>(intitemId)</div>
<li><div class="fn">void<a href="#be9de6"><b>highlighted</b></a>(intitemId)</div>
</ul>
<h2>Important Inherited Members</h2>
<ul>
<li><div class="fn">int<a href="qmenudata.html#230967"><b>insertItem</b></a>(QCustomMenuItem*custom, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#e53049"><b>insertItem</b></a>(QWidget*widget, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#d242f5"><b>insertItem</b></a>(constQIconSet&amp;icon, QCustomMenuItem*custom, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#eab16a"><b>insertItem</b></a>(constQIconSet&amp;icon, constQPixmap&amp;pixmap, QPopupMenu*popup, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#e33289"><b>insertItem</b></a>(constQIconSet&amp;icon, constQPixmap&amp;pixmap, constQObject*receiver, constchar*member, intaccel, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#deddb9"><b>insertItem</b></a>(constQIconSet&amp;icon, constQPixmap&amp;pixmap, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#549faf"><b>insertItem</b></a>(constQIconSet&amp;icon, constQString&amp;text, QPopupMenu*popup, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#033c64"><b>insertItem</b></a>(constQIconSet&amp;icon, constQString&amp;text, constQObject*receiver, constchar*member, intaccel, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#1fb84f"><b>insertItem</b></a>(constQIconSet&amp;icon, constQString&amp;text, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#c8759a"><b>insertItem</b></a>(constQPixmap&amp;pixmap, QPopupMenu*popup, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#c087c8"><b>insertItem</b></a>(constQPixmap&amp;pixmap, constQObject*receiver, constchar*member, intaccel, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#865195"><b>insertItem</b></a>(constQPixmap&amp;pixmap, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#0076cb"><b>insertItem</b></a>(constQString&amp;text, QPopupMenu*popup, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#a0155e"><b>insertItem</b></a>(constQString&amp;text, constQObject*receiver, constchar*member, intaccel, intid, intindex)</div>
<li><div class="fn">int<a href="qmenudata.html#2b0523"><b>insertItem</b></a>(constQString&amp;text, intid, intindex)</div>
<li><div class="fn">void<a href="qmenudata.html#001b53"><b>removeItem</b></a>(intid)</div>
<li><div class="fn">void<a href="qmenudata.html#4bd5e3"><b>clear</b></a>()</div>
<li><div class="fn">int<a href="qmenudata.html#e34b79"><b>insertSeparator</b></a>(intindex)</div>
<li><div class="fn">void<a href="qmenudata.html#c9a23c"><b>setItemEnabled</b></a>(intid, boolenable)</div>
<li><div class="fn">bool<a href="qmenudata.html#f5c40c"><b>isItemEnabled</b></a>(intid)const</div>
</ul>
<h2>Protected Members</h2>
<ul>
<li><div class="fn">virtualvoid<a href="#9e8437"><b>drawContents</b></a>(QPainter*)</div>
<li><div class="fn">virtualvoid<b>fontChange</b>(constQFont&amp;)(internal)</div>
<li><div class="fn">virtualvoid<a href="#e308fe"><b>menuContentsChanged</b></a>()</div>
<li><div class="fn">virtualvoid<a href="#74727d"><b>menuStateChanged</b></a>()</div>
</ul>
<h2>Properties</h2>
<table border=1 cellpadding=3 cellspacing=0>
<tr><th>Type<th>Name<th>READ<th>WRITE<th>Options
<tr><td>Separator<td>separator<td>separator<td>setSeparator<td>&nbsp;
<tr><td>bool<td>defaultUp<td>isDefaultUp<td>setDefaultUp<td>&nbsp;
</table>
<hr><h2><a name="details"></a>Detailed Description</h2>
The QMenuBar class provides a horizontal menu bar.
<p>
A menu bar consists of a list of submenu items, so-called pulldown
menus.  You add submenu items with <a href="qmenudata.html#0076cb">insertItem</a>(). Assuming that <code>menubar</code> is a pointer to a QMenuBar and <code>filemenu</code> a pointer to a
<a href="qpopupmenu.html">QPopupMenu</a>, <pre>  menubar-&gt;insertItem( "&amp;File", filemenu );
</pre>
<p>inserts the menu into the menu bar. The ampersand in the item text declares
Alt-f as shortcut for this menu. Use "&&" to get a real ampsend in the menubar.
<p>Items are either enabled or disabled. You toggle their state with
<a href="qmenudata.html#c9a23c">setItemEnabled</a>().
<p>Note that there is no need to layout a menu bar. It automatically
sets its own geometry to the top of the parent widget and changes it
appropriately whenever the parent is resized.
<p><a href="menu-menu-cpp.html#QMenuBar">menu/menu.cpp</a> is a typical example of QMenuBar and QPopupMenu use.
<p><img src=qmenubar-m.png> <img src=qmenubar-w.png>
<p>See also  <a href="qpopupmenu.html">QPopupMenu</a> and <a href="guibooks.html#fowler">GUI Design Handbook: Menu Bar</a>
<p>Examples:
 <a href="grapher-grapher-cpp.html#QMenuBar">grapher/grapher.cpp</a>
 <a href="layout-layout-cpp.html#QMenuBar">layout/layout.cpp</a>
 <a href="menu-menu-cpp.html#QMenuBar">menu/menu.cpp</a>
 <a href="progress-progress-cpp.html#QMenuBar">progress/progress.cpp</a>
 <a href="scrollview-scrollview-cpp.html#QMenuBar">scrollview/scrollview.cpp</a>

<hr><h2>Member Type Documentation</h2>
<h3 class="fn"><a name="Separator">QMenuBar::Separator</a></h3>
This enum type is used to decide whether QMenuBar should draw a
separator line at its bottom.  The possible values are: <ul>
<li> <code>Never</code> - in many applications, there already is a separator,
and two looks stupid.
<li> <code>InWindowsStyle</code> - in some other applications, a separator
looks good in Windows style but not else.
<p></ul>
<hr><h2>Member Function Documentation</h2>
<h3 class="fn"><a name="a44cc0"></a>QMenuBar::QMenuBar(<a href="qwidget.html">QWidget</a>*parent=0, constchar*name=0)</h3>
<p>Constructs a menu bar with a <em>parent</em> and a <em>name.</em>
<h3 class="fn"><a name="c35222"></a>QMenuBar::~QMenuBar()</h3>
<p>Destroys the menu bar.
<h3 class="fn">void<a name="cd3523"></a>QMenuBar::activateItemAt(intindex)</h3>
<p>Reimplemented for internal reasons; the API is not affected.
<h3 class="fn">void<a name="d2d6e0"></a>QMenuBar::activated(intid) <code>[signal]</code></h3>
<p>This signal is emitted when a menu item is selected; <em>id</em> is the id
of the selected item.
<p>Normally, you will connect each menu item to a single slot using
<a href="qmenudata.html#a0155e">QMenuData::insertItem</a>(), but sometimes you will want to connect
several items to a single slot (most often if the user selects from
an array).  This signal is handy in such cases.
<p>See also  <a href="#be9de6">highlighted</a>() and <a href="qmenudata.html#a0155e">QMenuData::insertItem</a>().
<h3 class="fn">bool<a name="a44d5a"></a>QMenuBar::customWhatsThis()const <code>[virtual]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#eeb880">QWidget.</a>
<h3 class="fn">void<a name="9e8437"></a>QMenuBar::drawContents(<a href="qpainter.html">QPainter</a>*p) <code>[virtualprotected]</code></h3>
<p>Called from <a href="qframe.html#963e1a">QFrame::paintEvent</a>().
<p>Reimplemented from <a href="qframe.html#1991fc">QFrame.</a>
<h3 class="fn">bool<a name="041caa"></a>QMenuBar::eventFilter(<a href="qobject.html">QObject</a>*object, <a href="qevent.html">QEvent</a>*event) <code>[virtual]</code></h3>
<p>This function is used to adjust the menu bar's geometry to the
parent widget's.  Note that this is <em>not</em> part of the public
interface - the function is <code>public</code> only because
<a href="qobject.html#bd20fe">QObject::eventFilter</a>() is.
<p>Reimplemented from <a href="qobject.html#bd20fe">QObject.</a>
<h3 class="fn">void<a name="94239f"></a>QMenuBar::focusInEvent(<a href="qfocusevent.html">QFocusEvent</a>*) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#21a4b8">QWidget.</a>
<h3 class="fn">void<a name="8e55b7"></a>QMenuBar::focusOutEvent(<a href="qfocusevent.html">QFocusEvent</a>*) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#de664a">QWidget.</a>
<h3 class="fn">int<a name="ecc869"></a>QMenuBar::heightForWidth(intmax_width)const <code>[virtual]</code></h3>
<p>Returns the height that the menu would resize itself to if its parent
(and hence itself) resized to the given width.  This can be useful for
simple layout tasks where the height of the menubar is needed after
items have been inserted.  See examples/showimg/showimg.cpp for an
example of the usage.
<p>Reimplemented from <a href="qwidget.html#1a2d58">QWidget.</a>
<h3 class="fn">void<a name="64310d"></a>QMenuBar::hide() <code>[virtual]</code></h3>
<p>Reimplements <a href="qwidget.html#410481">QWidget::hide</a>() in order to deselect any selected item and
calls setUpLayout() for the mainwindow.
<p>Reimplemented from <a href="qwidget.html#410481">QWidget.</a>
<h3 class="fn">void<a name="be9de6"></a>QMenuBar::highlighted(intid) <code>[signal]</code></h3>
<p>This signal is emitted when a menu item is highlighted; <em>id</em> is the
id of the highlighted item.
<p>Normally, you will connect each menu item to a single slot using
<a href="qmenudata.html#a0155e">QMenuData::insertItem</a>(), but sometimes you will want to connect
several items to a single slot (most often if the user selects from
an array).  This signal is handy in such cases.
<p>See also  <a href="#d2d6e0">activated</a>() and <a href="qmenudata.html#a0155e">QMenuData::insertItem</a>().
<h3 class="fn">bool<a name="98ec02"></a>QMenuBar::isDefaultUp()const</h3>
<p>Returns whether the menus default to popping "down" the screen
(the default), or "up".
<p>See also  <a href="#db05df">setDefaultUp</a>();.
<h3 class="fn">void<a name="a93e50"></a>QMenuBar::keyPressEvent(<a href="qkeyevent.html">QKeyEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#0a4482">QWidget.</a>
<h3 class="fn">void<a name="15f36a"></a>QMenuBar::leaveEvent(<a href="qevent.html">QEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#7eaa8a">QWidget.</a>
<h3 class="fn">void<a name="e308fe"></a>QMenuBar::menuContentsChanged() <code>[virtualprotected]</code></h3>
<p>Recomputes the menu bar's display data according to the new
contents.
<p>You should never need to call this, it is called automatically by
<a href="qmenudata.html">QMenuData</a> whenever it needs to be called.
<p>Reimplemented from <a href="qmenudata.html#f9bfef">QMenuData.</a>
<h3 class="fn">void<a name="74727d"></a>QMenuBar::menuStateChanged() <code>[virtualprotected]</code></h3>
<p>Recomputes the menu bar's display data according to the new
state.
<p>You should never need to call this, it is called automatically by
<a href="qmenudata.html">QMenuData</a> whenever it needs to be called.
<p>Reimplemented from <a href="qmenudata.html#402fb8">QMenuData.</a>
<h3 class="fn"><a href="qsize.html">QSize</a><a name="be0c20"></a>QMenuBar::minimumSize()const</h3>
<p>Reimplemented for internal reasons; the API is not affected.
<h3 class="fn"><a href="qsize.html">QSize</a><a name="33423d"></a>QMenuBar::minimumSizeHint()const <code>[virtual]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#553e08">QWidget.</a>
<h3 class="fn">void<a name="50b34a"></a>QMenuBar::mouseMoveEvent(<a href="qmouseevent.html">QMouseEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#a51d92">QWidget.</a>
<h3 class="fn">void<a name="8a5755"></a>QMenuBar::mousePressEvent(<a href="qmouseevent.html">QMouseEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#2ecc04">QWidget.</a>
<h3 class="fn">void<a name="3c5f28"></a>QMenuBar::mouseReleaseEvent(<a href="qmouseevent.html">QMouseEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#9aa77f">QWidget.</a>
<h3 class="fn">void<a name="6b5ce9"></a>QMenuBar::resizeEvent(<a href="qresizeevent.html">QResizeEvent</a>*) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#7d375f">QWidget.</a>
<h3 class="fn">QMenuBar::Separator<a name="ff48a9"></a>QMenuBar::separator()const</h3>
<p>Returns the currently set <a href="#Separator">Separator</a> usage.
<p>See also  <a href="#Separator">Separator</a> and <a href="#815978">setSeparator</a>().
<h3 class="fn">void<a name="db05df"></a>QMenuBar::setDefaultUp(boolon)</h3>
<p>Sets the default popup orientation. By default, menus pop "down" the
screen.  By calling setDefaultUp(TRUE) the menu will pop "up".  You
might call this for menus that are <em>below</em> the document to which
they refer.
<p>If the menu would not fit on the screen, the other direction is used
rather than the default.
<p>See also  defaultUp();.
<h3 class="fn">void<a name="815978"></a>QMenuBar::setSeparator(<a href="qmenubar.html#Separator">Separator</a>when)</h3>
<p>When a menubar is used above an unframed widget, it may look better
with a separating line when displayed with <a href="qwidget.html#027381">WindowsStyle</a>.
<p>This function sets the usage of such a separator to appear either
QMenuBar::Never, or QMenuBar::InWindowsStyle.
<p>The default is QMenuBar::Never.
<p>See also  <a href="#Separator">Separator</a> and <a href="#ff48a9">separator</a>().
<p>Examples:
 <a href="layout-layout-cpp.html#setSeparator">layout/layout.cpp</a>
 <a href="scrollview-scrollview-cpp.html#setSeparator">scrollview/scrollview.cpp</a>
<h3 class="fn">void<a name="572327"></a>QMenuBar::show() <code>[virtual]</code></h3>
<p>Reimplements <a href="qwidget.html#200ee5">QWidget::show</a>() in order to set up the correct keyboard
accelerators and raise itself to the top of the widget stack.
<p>Reimplemented from <a href="qwidget.html#200ee5">QWidget.</a>
<h3 class="fn"><a href="qsize.html">QSize</a><a name="62f3bb"></a>QMenuBar::sizeHint()const <code>[virtual]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#4511d1">QWidget.</a>
<h3 class="fn">void<a name="9d6d66"></a>QMenuBar::styleChange(<a href="qstyle.html">QStyle</a>&amp;old) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#5e2e23">QWidget.</a>
<h3 class="fn">void<a name="15ea9b"></a>QMenuBar::fontChange(const<a href="qfont.html">QFont</a>&amp;f) <code>[virtualprotected]</code></h3>
<p>For internal use only.
<p>Reimplemented from <a href="qwidget.html#ac5c83">QWidget.</a>
<h3 class="fn">void<a name="736fda"></a>QMenuBar::updateItem(intid) <code>[virtual]</code></h3>
<p>For internal use only.
<p>Reimplemented from <a href="qmenudata.html#f532d3">QMenuData.</a>
<hr><p>
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