<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- minimal.qdoc --> <title>WebEngine Widgets Minimal Example | Qt WebEngine 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtwebengine-index.html">Qt WebEngine</a></td><td ><a href="webengine-widgetexamples.html">Qt WebEngine Widgets Examples</a></td><td >WebEngine Widgets Minimal Example</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#running-the-example">Running the Example</a></li> <li class="level1"><a href="#the-code">The Code</a></li> <li class="level1"><a href="#requirements">Requirements</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">WebEngine Widgets Minimal Example</h1> <span class="subtitle"></span> <!-- $$$webenginewidgets/minimal-description --> <div class="descr"> <a name="details"></a> <p class="centerAlign"><img src="images/minimal-example.png" alt="" /></p><p><i>WebEngine Widgets Minimal Example</i> demonstrates how to use <a href="qwebengineview.html">QWebEngineView</a> to render a web page. It shows the minimum amount of code needed to load and display an HTML page, and can be used as a basis for further experimentation.</p> <a name="running-the-example"></a> <h2 id="running-the-example">Running the Example</h2> <p>To run the example from Qt Creator, open the <b>Welcome</b> mode and select the example from <b>Examples</b>. For more information, visit Building and Running an Example.</p> <a name="the-code"></a> <h2 id="the-code">The Code</h2> <p>In the <code>main</code> function we first set the Qt::AA_EnableHighDpiScaling. This lets the web view automatically scale on high-dpi displays.</p> <p>Next, we instantiate a QApplication and a <a href="qwebengineview.html">QWebEngineView</a>. The URL to load is set by calling <a href="qwebengineview.html#url-prop">QWebEngineView::setUrl</a>. The view widget is given a reasonable default size, and shown. Finally, QApplication::exec() launches the main event loop.</p> <pre class="qml"> <span class="preprocessor">#include <QApplication></span> <span class="preprocessor">#include <QWebEngineView></span> <span class="type">int</span> main(<span class="type">int</span> argc<span class="operator">,</span> <span class="type">char</span> <span class="operator">*</span>argv<span class="operator">[</span><span class="operator">]</span>) { <span class="type">QCoreApplication</span><span class="operator">::</span>setAttribute(<span class="type">Qt</span><span class="operator">::</span>AA_EnableHighDpiScaling); <span class="type">QApplication</span> app(argc<span class="operator">,</span> argv); <span class="type"><a href="qwebengineview.html">QWebEngineView</a></span> view; view<span class="operator">.</span>setUrl(<span class="type">QUrl</span>(<span class="type">QStringLiteral</span>(<span class="string">"http://www.qt.io"</span>))); view<span class="operator">.</span>resize(<span class="number">1024</span><span class="operator">,</span> <span class="number">750</span>); view<span class="operator">.</span>show(); <span class="keyword">return</span> app<span class="operator">.</span>exec(); } </pre> <a name="requirements"></a> <h2 id="requirements">Requirements</h2> <p>The example requires a working internet connection to render the Qt Homepage. An optional system proxy should be picked up automatically. However, for proxies that require a username or password, you need to connect to <a href="qwebenginepage.html#proxyAuthenticationRequired">QWebEnginePage::proxyAuthenticationRequired</a>.</p> <p><a href="qtwebenginewidgets-index.html">Qt WebEngine Widgets</a> uses the Qt Quick Scene Graph to compose the page. Therefore, OpenGL support is required.</p> <p>Files:</p> <ul> <li><a href="qtwebengine-webenginewidgets-minimal-main-cpp.html">webenginewidgets/minimal/main.cpp</a></li> <li><a href="qtwebengine-webenginewidgets-minimal-minimal-pro.html">webenginewidgets/minimal/minimal.pro</a></li> </ul> </div> <!-- @@@webenginewidgets/minimal --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>