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<title>Qt 4.8: QTextBlockGroup Class Reference</title>
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<a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#protected-functions">Protected Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QTextBlockGroup Class Reference</h1>
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<p>The QTextBlockGroup class provides a container for text blocks within a <a href="qtextdocument.html">QTextDocument</a>. <a href="#details">More...</a></p>
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<pre class="cpp"> <span class="preprocessor">#include <QTextBlockGroup></span></pre><p><b>Inherits: </b><a href="qtextobject.html">QTextObject</a>.</p>
<p><b>Inherited by: </b><a href="qtextlist.html">QTextList</a>.</p>
<p><b>Note:</b> All functions in this class are <a href="threads-reentrancy.html#reentrant">reentrant</a>.</p>
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<li><a href="qtextblockgroup-members.html">List of all members, including inherited members</a></li>
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<a name="protected-functions"></a>
<h2>Protected Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qtextblockgroup.html#QTextBlockGroup">QTextBlockGroup</a></b> ( QTextDocument * <i>document</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qtextblockgroup.html#dtor.QTextBlockGroup">~QTextBlockGroup</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qtextblockgroup.html#blockFormatChanged">blockFormatChanged</a></b> ( const QTextBlock & <i>block</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qtextblockgroup.html#blockInserted">blockInserted</a></b> ( const QTextBlock & <i>block</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QList<QTextBlock> </td><td class="memItemRight bottomAlign"><b><a href="qtextblockgroup.html#blockList">blockList</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qtextblockgroup.html#blockRemoved">blockRemoved</a></b> ( const QTextBlock & <i>block</i> )</td></tr>
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<ul>
<li class="fn">1 protected function inherited from <a href="qtextobject.html#protected-functions">QTextObject</a></li>
<li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>
</ul>
<h3>Additional Inherited Members</h3>
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<li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li>
<li class="fn">4 public functions inherited from <a href="qtextobject.html#public-functions">QTextObject</a></li>
<li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
<li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>
<li class="fn">1 signal inherited from <a href="qobject.html#signals">QObject</a></li>
<li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>
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<h2>Detailed Description</h2>
<p>The QTextBlockGroup class provides a container for text blocks within a <a href="qtextdocument.html">QTextDocument</a>.</p>
<p>Block groups can be used to organize blocks of text within a document. They maintain an up-to-date list of the text blocks that belong to them, even when text blocks are being edited.</p>
<p>Each group has a parent document which is specified when the group is constructed.</p>
<p>Text blocks can be inserted into a group with <a href="qtextblockgroup.html#blockInserted">blockInserted</a>(), and removed with <a href="qtextblockgroup.html#blockRemoved">blockRemoved</a>(). If a block's format is changed, <a href="qtextblockgroup.html#blockFormatChanged">blockFormatChanged</a>() is called.</p>
<p>The list of blocks in the group is returned by <a href="qtextblockgroup.html#blockList">blockList</a>(). Note that the blocks in the list are not necessarily adjacent elements in the document; for example, the top-level items in a multi-level list will be separated by the items in lower levels of the list.</p>
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<p><b>See also </b><a href="qtextblock.html">QTextBlock</a> and <a href="qtextdocument.html">QTextDocument</a>.</p>
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<div class="func">
<h2>Member Function Documentation</h2>
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<h3 class="fn"><a name="QTextBlockGroup"></a>QTextBlockGroup::<span class="name">QTextBlockGroup</span> ( <span class="type"><a href="qtextdocument.html">QTextDocument</a></span> * <i>document</i> )<tt> [protected]</tt></h3>
<p>Creates a new new block group for the given <i>document</i>.</p>
<p><b>Warning:</b> This function should only be called from <a href="qtextdocument.html#createObject">QTextDocument::createObject</a>().</p>
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<h3 class="fn"><a name="dtor.QTextBlockGroup"></a>QTextBlockGroup::<span class="name">~QTextBlockGroup</span> ()<tt> [protected]</tt></h3>
<p>Destroys this block group; the blocks are not deleted, they simply don't belong to this block anymore.</p>
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<h3 class="fn"><a name="blockFormatChanged"></a><span class="type">void</span> QTextBlockGroup::<span class="name">blockFormatChanged</span> ( const <span class="type"><a href="qtextblock.html">QTextBlock</a></span> & <i>block</i> )<tt> [virtual protected]</tt></h3>
<p>This function is called whenever the specified <i>block</i> of text is changed. The text block is a member of this group.</p>
<p>The base class implementation does nothing.</p>
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<h3 class="fn"><a name="blockInserted"></a><span class="type">void</span> QTextBlockGroup::<span class="name">blockInserted</span> ( const <span class="type"><a href="qtextblock.html">QTextBlock</a></span> & <i>block</i> )<tt> [virtual protected]</tt></h3>
<p>Appends the given <i>block</i> to the end of the group.</p>
<p><b>Warning:</b> If you reimplement this function you must call the base class implementation.</p>
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<h3 class="fn"><a name="blockList"></a><span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qtextblock.html">QTextBlock</a></span>> QTextBlockGroup::<span class="name">blockList</span> () const<tt> [protected]</tt></h3>
<p>Returns a (possibly empty) list of all the blocks that are part of the block group.</p>
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<h3 class="fn"><a name="blockRemoved"></a><span class="type">void</span> QTextBlockGroup::<span class="name">blockRemoved</span> ( const <span class="type"><a href="qtextblock.html">QTextBlock</a></span> & <i>block</i> )<tt> [virtual protected]</tt></h3>
<p>Removes the given <i>block</i> from the group; the block itself is not deleted, it simply isn't a member of this group anymore.</p>
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