<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>main.cpp Example File | Qt Charts 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="qtcharts-index.html">Qt Charts</a></td><td ><a href="qtcharts-candlestickchart-example.html">Candlestick Chart Example</a></td><td >main.cpp Example File</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="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">main.cpp Example File</h1> <span class="subtitle">candlestickchart/main.cpp</span> <!-- $$$candlestickchart/main.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt Charts module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:GPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3 or (at your option) any later version ** approved by the KDE Free Qt Foundation. The licenses are as published by ** the Free Software Foundation and appearing in the file LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include <QtCharts/QBarCategoryAxis></span> <span class="preprocessor">#include <QtCharts/QCandlestickSeries></span> <span class="preprocessor">#include <QtCharts/QChartView></span> <span class="preprocessor">#include <QtCharts/QValueAxis></span> <span class="preprocessor">#include <QtCore/QDateTime></span> <span class="preprocessor">#include <QtWidgets/QApplication></span> <span class="preprocessor">#include <QtWidgets/QMainWindow></span> <span class="preprocessor">#include "candlestickdatareader.h"</span> QT_CHARTS_USE_NAMESPACE <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">QApplication</span> a(argc<span class="operator">,</span> argv); <span class="type"><a href="qcandlestickseries.html">QCandlestickSeries</a></span> <span class="operator">*</span>acmeSeries <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcandlestickseries.html">QCandlestickSeries</a></span>(); acmeSeries<span class="operator">-</span><span class="operator">></span>setName(<span class="string">"Acme Ltd"</span>); acmeSeries<span class="operator">-</span><span class="operator">></span>setIncreasingColor(<span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>green)); acmeSeries<span class="operator">-</span><span class="operator">></span>setDecreasingColor(<span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>red)); <span class="type">QFile</span> acmeData(<span class="string">":acme"</span>); <span class="keyword">if</span> (<span class="operator">!</span>acmeData<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly <span class="operator">|</span> <span class="type">QIODevice</span><span class="operator">::</span>Text)) <span class="keyword">return</span> <span class="number">1</span>; <span class="type">QStringList</span> categories; CandlestickDataReader dataReader(<span class="operator">&</span>acmeData); <span class="keyword">while</span> (<span class="operator">!</span>dataReader<span class="operator">.</span>atEnd()) { <span class="type"><a href="qcandlestickset.html">QCandlestickSet</a></span> <span class="operator">*</span>set <span class="operator">=</span> dataReader<span class="operator">.</span>readCandlestickSet(); <span class="keyword">if</span> (set) { acmeSeries<span class="operator">-</span><span class="operator">></span>append(set); categories <span class="operator"><</span><span class="operator"><</span> <span class="type">QDateTime</span><span class="operator">::</span>fromMSecsSinceEpoch(set<span class="operator">-</span><span class="operator">></span>timestamp())<span class="operator">.</span>toString(<span class="string">"dd"</span>); } } <span class="type"><a href="qchart.html">QChart</a></span> <span class="operator">*</span>chart <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchart.html">QChart</a></span>(); chart<span class="operator">-</span><span class="operator">></span>addSeries(acmeSeries); chart<span class="operator">-</span><span class="operator">></span>setTitle(<span class="string">"Acme Ltd Historical Data (July 2015)"</span>); chart<span class="operator">-</span><span class="operator">></span>setAnimationOptions(<span class="type"><a href="qchart.html">QChart</a></span><span class="operator">::</span>SeriesAnimations); chart<span class="operator">-</span><span class="operator">></span>createDefaultAxes(); <span class="type"><a href="qbarcategoryaxis.html">QBarCategoryAxis</a></span> <span class="operator">*</span>axisX <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qbarcategoryaxis.html">QBarCategoryAxis</a></span> <span class="operator">*</span><span class="operator">></span>(chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Horizontal)<span class="operator">.</span>at(<span class="number">0</span>)); axisX<span class="operator">-</span><span class="operator">></span>setCategories(categories); <span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span>axisY <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qvalueaxis.html">QValueAxis</a></span> <span class="operator">*</span><span class="operator">></span>(chart<span class="operator">-</span><span class="operator">></span>axes(<span class="type">Qt</span><span class="operator">::</span>Vertical)<span class="operator">.</span>at(<span class="number">0</span>)); axisY<span class="operator">-</span><span class="operator">></span>setMax(axisY<span class="operator">-</span><span class="operator">></span>max() <span class="operator">*</span> <span class="number">1.01</span>); axisY<span class="operator">-</span><span class="operator">></span>setMin(axisY<span class="operator">-</span><span class="operator">></span>min() <span class="operator">*</span> <span class="number">0.99</span>); chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">true</span>); chart<span class="operator">-</span><span class="operator">></span>legend()<span class="operator">-</span><span class="operator">></span>setAlignment(<span class="type">Qt</span><span class="operator">::</span>AlignBottom); <span class="type"><a href="qchartview.html">QChartView</a></span> <span class="operator">*</span>chartView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qchartview.html">QChartView</a></span>(chart); chartView<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type">QPainter</span><span class="operator">::</span>Antialiasing); <span class="type">QMainWindow</span> window; window<span class="operator">.</span>setCentralWidget(chartView); window<span class="operator">.</span>resize(<span class="number">800</span><span class="operator">,</span> <span class="number">600</span>); window<span class="operator">.</span>show(); <span class="keyword">return</span> a<span class="operator">.</span>exec(); } </pre> </div> <!-- @@@candlestickchart/main.cpp --> </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>