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375 lines
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<h1 class="title">QStyleOptionHeader Class Reference</h1>
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<!-- $$$QStyleOptionHeader-brief -->
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<p>The QStyleOptionHeader class is used to describe the parameters for drawing a header. <a href="#details">More...</a></p>
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<!-- @@@QStyleOptionHeader -->
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<pre class="cpp"> <span class="preprocessor">#include <QStyleOptionHeader></span></pre><p><b>Inherits: </b><a href="qstyleoption.html">QStyleOption</a>.</p>
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<ul>
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<a name="public-types"></a>
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<h2>Public Types</h2>
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<table class="alignedsummary">
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<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#SectionPosition-enum">SectionPosition</a></b> { Beginning, Middle, End, OnlyOneSection }</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#SelectedPosition-enum">SelectedPosition</a></b> { NotAdjacent, NextIsSelected, PreviousIsSelected, NextAndPreviousAreSelected }</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#SortIndicator-enum">SortIndicator</a></b> { None, SortUp, SortDown }</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#StyleOptionType-enum">StyleOptionType</a></b> { Type }</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#StyleOptionVersion-enum">StyleOptionVersion</a></b> { Version }</td></tr>
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</table>
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<a name="public-functions"></a>
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<h2>Public Functions</h2>
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<table class="alignedsummary">
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#QStyleOptionHeader">QStyleOptionHeader</a></b> ()</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#QStyleOptionHeader-2">QStyleOptionHeader</a></b> ( const QStyleOptionHeader & <i>other</i> )</td></tr>
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</table>
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<ul>
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<li class="fn">2 public functions inherited from <a href="qstyleoption.html#public-functions">QStyleOption</a></li>
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</ul>
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<a name="public-variables"></a>
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<h2>Public Variables</h2>
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<table class="alignedsummary">
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<tr><td class="memItemLeft rightAlign topAlign"> QIcon </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#icon-var">icon</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> Qt::Alignment </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#iconAlignment-var">iconAlignment</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> Qt::Orientation </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#orientation-var">orientation</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> SectionPosition </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#position-var">position</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#section-var">section</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> SelectedPosition </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#selectedPosition-var">selectedPosition</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> SortIndicator </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#sortIndicator-var">sortIndicator</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#text-var">text</a></b></td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> Qt::Alignment </td><td class="memItemRight bottomAlign"><b><a href="qstyleoptionheader.html#textAlignment-var">textAlignment</a></b></td></tr>
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</table>
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<ul>
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<li class="fn">7 public variables inherited from <a href="qstyleoption.html#public-variables">QStyleOption</a></li>
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</ul>
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<a name="details"></a>
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<!-- $$$QStyleOptionHeader-description -->
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<div class="descr">
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<h2>Detailed Description</h2>
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<p>The QStyleOptionHeader class is used to describe the parameters for drawing a header.</p>
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<p>QStyleOptionHeader contains all the information that <a href="qstyle.html">QStyle</a> functions need to draw the item views' header pane, header sort arrow, and header label.</p>
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<p>For performance reasons, the access to the member variables is direct (i.e., using the <tt>.</tt> or <tt>-></tt> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters used by the style functions.</p>
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<p>For an example demonstrating how style options can be used, see the <a href="widgets-styles.html">Styles</a> example.</p>
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</div>
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<p><b>See also </b><a href="qstyleoption.html">QStyleOption</a>.</p>
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<!-- @@@QStyleOptionHeader -->
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<div class="types">
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<h2>Member Type Documentation</h2>
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<!-- $$$SectionPosition$$$Beginning$$$Middle$$$End$$$OnlyOneSection -->
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<h3 class="fn"><a name="SectionPosition-enum"></a>enum QStyleOptionHeader::<span class="name">SectionPosition</span></h3>
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<p>This enum lets you know where the section's position is in relation to the other sections.</p>
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<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::Beginning</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">At the beginining of the header</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::Middle</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">In the middle of the header</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::End</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">At the end of the header</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::OnlyOneSection</tt></td><td class="topAlign"><tt>3</tt></td><td class="topAlign">Only one header section</td></tr>
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</table>
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<p><b>See also </b><a href="qstyleoptionheader.html#position-var">position</a>.</p>
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<!-- @@@SectionPosition -->
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<!-- $$$SelectedPosition$$$NotAdjacent$$$NextIsSelected$$$PreviousIsSelected$$$NextAndPreviousAreSelected -->
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<h3 class="fn"><a name="SelectedPosition-enum"></a>enum QStyleOptionHeader::<span class="name">SelectedPosition</span></h3>
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<p>This enum lets you know where the section's position is in relation to the selected section.</p>
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<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::NotAdjacent</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">Not adjacent to the selected section</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::NextIsSelected</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">The next section is selected</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::PreviousIsSelected</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">The previous section is selected</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::NextAndPreviousAreSelected</tt></td><td class="topAlign"><tt>3</tt></td><td class="topAlign">Both the next and previous section are selected</td></tr>
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</table>
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<p><b>See also </b><a href="qstyleoptionheader.html#selectedPosition-var">selectedPosition</a>.</p>
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<!-- @@@SelectedPosition -->
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<!-- $$$SortIndicator$$$None$$$SortUp$$$SortDown -->
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<h3 class="fn"><a name="SortIndicator-enum"></a>enum QStyleOptionHeader::<span class="name">SortIndicator</span></h3>
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<p>Indicates which direction the sort indicator should be drawn</p>
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<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::None</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">No sort indicator is needed</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::SortUp</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">Draw an up indicator</td></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::SortDown</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">Draw a down indicator</td></tr>
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</table>
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<p><b>See also </b><a href="qstyleoptionheader.html#sortIndicator-var">sortIndicator</a>.</p>
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<!-- @@@SortIndicator -->
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<!-- $$$StyleOptionType$$$Type -->
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<h3 class="fn"><a name="StyleOptionType-enum"></a>enum QStyleOptionHeader::<span class="name">StyleOptionType</span></h3>
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<p>This enum is used to hold information about the type of the style option, and is defined for each <a href="qstyleoption.html">QStyleOption</a> subclass.</p>
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<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::Type</tt></td><td class="topAlign"><tt>SO_Header</tt></td><td class="topAlign">The type of style option provided (<a href="qstyleoption.html#OptionType-enum">SO_Header</a> for this class).</td></tr>
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</table>
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<p>The type is used internally by <a href="qstyleoption.html">QStyleOption</a>, its subclasses, and <a href="qstyleoption.html#qstyleoption_cast">qstyleoption_cast</a>() to determine the type of style option. In general you do not need to worry about this unless you want to create your own <a href="qstyleoption.html">QStyleOption</a> subclass and your own styles.</p>
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<p><b>See also </b><a href="qstyleoptionheader.html#StyleOptionVersion-enum">StyleOptionVersion</a>.</p>
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<!-- @@@StyleOptionType -->
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<!-- $$$StyleOptionVersion$$$Version -->
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<h3 class="fn"><a name="StyleOptionVersion-enum"></a>enum QStyleOptionHeader::<span class="name">StyleOptionVersion</span></h3>
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<p>This enum is used to hold information about the version of the style option, and is defined for each <a href="qstyleoption.html">QStyleOption</a> subclass.</p>
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<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
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<tr><td class="topAlign"><tt>QStyleOptionHeader::Version</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">1</td></tr>
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</table>
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<p>The version is used by <a href="qstyleoption.html">QStyleOption</a> subclasses to implement extensions without breaking compatibility. If you use <a href="qstyleoption.html#qstyleoption_cast">qstyleoption_cast</a>(), you normally do not need to check it.</p>
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<p><b>See also </b><a href="qstyleoptionheader.html#StyleOptionType-enum">StyleOptionType</a>.</p>
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<!-- @@@StyleOptionVersion -->
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</div>
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<div class="func">
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<h2>Member Function Documentation</h2>
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<!-- $$$QStyleOptionHeader[overload1]$$$QStyleOptionHeader -->
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<h3 class="fn"><a name="QStyleOptionHeader"></a>QStyleOptionHeader::<span class="name">QStyleOptionHeader</span> ()</h3>
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<p>Constructs a <a href="qstyleoptionheader.html">QStyleOptionHeader</a>, initializing the members variables to their default values.</p>
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<!-- @@@QStyleOptionHeader -->
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<!-- $$$QStyleOptionHeader$$$QStyleOptionHeaderconstQStyleOptionHeader& -->
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<h3 class="fn"><a name="QStyleOptionHeader-2"></a>QStyleOptionHeader::<span class="name">QStyleOptionHeader</span> ( const <span class="type">QStyleOptionHeader</span> & <i>other</i> )</h3>
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<p>Constructs a copy of the <i>other</i> style option.</p>
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<!-- @@@QStyleOptionHeader -->
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</div>
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<div class="vars">
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<h2>Member Variable Documentation</h2>
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<!-- $$$icon -->
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<h3 class="fn"><a name="icon-var"></a><span class="type"><a href="qicon.html">QIcon</a></span> QStyleOptionHeader::<span class="name">icon</span></h3>
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<p>This variable holds the icon of the header.</p>
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<p>The default value is an empty icon, i.e. an icon with neither a pixmap nor a filename.</p>
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<!-- @@@icon -->
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<!-- $$$iconAlignment -->
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<h3 class="fn"><a name="iconAlignment-var"></a><span class="type"><a href="qt.html#AlignmentFlag-enum">Qt::Alignment</a></span> QStyleOptionHeader::<span class="name">iconAlignment</span></h3>
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<p>This variable holds the alignment flags for the icon of the header.</p>
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<p>The default value is <a href="qt.html#AlignmentFlag-enum">Qt::AlignLeft</a>.</p>
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<!-- @@@iconAlignment -->
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<!-- $$$orientation -->
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<h3 class="fn"><a name="orientation-var"></a><span class="type"><a href="qt.html#Orientation-enum">Qt::Orientation</a></span> QStyleOptionHeader::<span class="name">orientation</span></h3>
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<p>This variable holds the header's orientation (horizontal or vertical).</p>
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<p>The default orientation is <a href="qt.html#Orientation-enum">Qt::Horizontal</a></p>
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<!-- @@@orientation -->
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<!-- $$$position -->
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<h3 class="fn"><a name="position-var"></a><span class="type"><a href="qstyleoptionheader.html#SectionPosition-enum">SectionPosition</a></span> QStyleOptionHeader::<span class="name">position</span></h3>
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<p>This variable holds the section's position in relation to the other sections.</p>
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<p>The default value is <a href="qstyleoptionheader.html#SectionPosition-enum">QStyleOptionHeader::Beginning</a>.</p>
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<!-- @@@position -->
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<!-- $$$section -->
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<h3 class="fn"><a name="section-var"></a><span class="type">int</span> QStyleOptionHeader::<span class="name">section</span></h3>
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<p>This variable holds which section of the header is being painted.</p>
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<p>The default value is 0.</p>
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<!-- @@@section -->
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<!-- $$$selectedPosition -->
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<h3 class="fn"><a name="selectedPosition-var"></a><span class="type"><a href="qstyleoptionheader.html#SelectedPosition-enum">SelectedPosition</a></span> QStyleOptionHeader::<span class="name">selectedPosition</span></h3>
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<p>This variable holds the section's position in relation to the selected section.</p>
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<p>The default value is <a href="qstyleoptionheader.html#SelectedPosition-enum">QStyleOptionHeader::NotAdjacent</a></p>
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<!-- @@@selectedPosition -->
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|
<!-- $$$sortIndicator -->
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|
<h3 class="fn"><a name="sortIndicator-var"></a><span class="type"><a href="qstyleoptionheader.html#SortIndicator-enum">SortIndicator</a></span> QStyleOptionHeader::<span class="name">sortIndicator</span></h3>
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<p>This variable holds the direction the sort indicator should be drawn.</p>
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|
<p>The default value is <a href="qstyleoptionheader.html#SortIndicator-enum">QStyleOptionHeader::None</a>.</p>
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|
<!-- @@@sortIndicator -->
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<!-- $$$text -->
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|
<h3 class="fn"><a name="text-var"></a><span class="type"><a href="qstring.html">QString</a></span> QStyleOptionHeader::<span class="name">text</span></h3>
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|
<p>This variable holds the text of the header.</p>
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|
<p>The default value is an empty string.</p>
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|
<!-- @@@text -->
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|
<!-- $$$textAlignment -->
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|
<h3 class="fn"><a name="textAlignment-var"></a><span class="type"><a href="qt.html#AlignmentFlag-enum">Qt::Alignment</a></span> QStyleOptionHeader::<span class="name">textAlignment</span></h3>
|
|
<p>This variable holds the alignment flags for the text of the header.</p>
|
|
<p>The default value is <a href="qt.html#AlignmentFlag-enum">Qt::AlignLeft</a>.</p>
|
|
<!-- @@@textAlignment -->
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|
</div>
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