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<h1 class="title">happybirthdaysong.cpp Example File</h1>
<span class="small-subtitle">referenceexamples/binding/happybirthdaysong.cpp</span>
<!-- $$$referenceexamples/binding/happybirthdaysong.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"><span class="comment">/****************************************************************************
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** This file is part of the examples of the Qt Toolkit.
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<span class="preprocessor">#include "happybirthdaysong.h"</span>
<span class="preprocessor">#include <QTimer></span>
HappyBirthdaySong<span class="operator">::</span>HappyBirthdaySong(<span class="type">QObject</span> <span class="operator">*</span>parent)
: <span class="type">QObject</span>(parent)<span class="operator">,</span> m_line(<span class="operator">-</span><span class="number">1</span>)
{
setName(<span class="type">QString</span>());
<span class="type">QTimer</span> <span class="operator">*</span>timer <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTimer</span>(<span class="keyword">this</span>);
<span class="type">QObject</span><span class="operator">::</span>connect(timer<span class="operator">,</span> SIGNAL(timeout())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(advance()));
timer<span class="operator">-</span><span class="operator">></span>start(<span class="number">1000</span>);
}
<span class="type">void</span> HappyBirthdaySong<span class="operator">::</span>setTarget(<span class="keyword">const</span> <span class="type"><a href="qqmlproperty.html">QQmlProperty</a></span> <span class="operator">&</span>p)
{
m_target <span class="operator">=</span> p;
}
<span class="type">QString</span> HappyBirthdaySong<span class="operator">::</span>name() <span class="keyword">const</span>
{
<span class="keyword">return</span> m_name;
}
<span class="type">void</span> HappyBirthdaySong<span class="operator">::</span>setName(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>name)
{
<span class="keyword">if</span> (m_name <span class="operator">=</span><span class="operator">=</span> name)
<span class="keyword">return</span>;
m_name <span class="operator">=</span> name;
m_lyrics<span class="operator">.</span>clear();
m_lyrics <span class="operator"><</span><span class="operator"><</span> <span class="string">"Happy birthday to you,"</span>;
m_lyrics <span class="operator"><</span><span class="operator"><</span> <span class="string">"Happy birthday to you,"</span>;
m_lyrics <span class="operator"><</span><span class="operator"><</span> <span class="string">"Happy birthday dear "</span> <span class="operator">+</span> m_name <span class="operator">+</span> <span class="string">","</span>;
m_lyrics <span class="operator"><</span><span class="operator"><</span> <span class="string">"Happy birthday to you!"</span>;
m_lyrics <span class="operator"><</span><span class="operator"><</span> <span class="string">""</span>;
<span class="keyword">emit</span> nameChanged();
}
<span class="type">void</span> HappyBirthdaySong<span class="operator">::</span>advance()
{
m_line <span class="operator">=</span> (m_line <span class="operator">+</span> <span class="number">1</span>) <span class="operator">%</span> m_lyrics<span class="operator">.</span>count();
m_target<span class="operator">.</span>write(m_lyrics<span class="operator">.</span>at(m_line));
}</pre>
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<!-- @@@referenceexamples/binding/happybirthdaysong.cpp -->
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