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<td >Qt 5.9</td><td >Qt Help</td></tr></table><table class="buildversion"><tr>
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<h2 id="getting-started">Getting Started</h2>
<p>To use Qt Help classes, add this directive into the C++ files:</p>
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<span class="preprocessor">#include <QtHelp></span>
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<p>To link against the Qt Help module, add this line to the project file:</p>
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QT <span class="operator">+</span><span class="operator">=</span> help
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<h2 id="articles-and-guides">Articles and Guides</h2>
<p>The classes and tools supplied with Qt to enable developers to include online help and documentation in their applications are described in more detail in <a href="qthelp-framework.html">The Qt Help Framework</a>.</p>
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<p>Qt Core is available under commercial licenses from The Qt Company. In addition, it is available under the GNU Lesser General Public License, version 3, or the GNU General Public License, version 2. See Qt Licensing for further details.</p>
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