<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- fingerpaint.qdoc -->
  <title>Qt 4.8: Finger Paint Example</title>
  <link rel="stylesheet" type="text/css" href="style/style.css" />
  <script src="scripts/jquery.js" type="text/javascript"></script>
  <script src="scripts/functions.js" type="text/javascript"></script>
  <link rel="stylesheet" type="text/css" href="style/superfish.css" />
  <link rel="stylesheet" type="text/css" href="style/narrow.css" />
  <!--[if IE]>
<meta name="MSSmartTagsPreventParsing" content="true">
<meta http-equiv="imagetoolbar" content="no">
<![endif]-->
<!--[if lt IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie6.css">
<![endif]-->
<!--[if IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie7.css">
<![endif]-->
<!--[if IE 8]>
<link rel="stylesheet" type="text/css" href="style/style_ie8.css">
<![endif]-->

<script src="scripts/superfish.js" type="text/javascript"></script>
<script src="scripts/narrow.js" type="text/javascript"></script>

</head>
<body class="" onload="CheckEmptyAndLoadList();">
 <div class="header" id="qtdocheader">
    <div class="content"> 
    <div id="nav-logo">
      <a href="index.html">Home</a></div>
    <a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
    <div id="narrowsearch"></div>
    <div id="nav-topright">
      <ul>
        <li class="nav-topright-home"><a href="http://qt.digia.com/">Qt HOME</a></li>
        <li class="nav-topright-dev"><a href="http://qt-project.org/">DEV</a></li>
        <li class="nav-topright-doc nav-topright-doc-active"><a href="http://qt-project.org/doc/">
          DOC</a></li>
        <li class="nav-topright-blog"><a href="http://blog.qt.digia.com/">BLOG</a></li>
      </ul>
    </div>
    <div id="shortCut">
      <ul>
        <li class="shortCut-topleft-inactive"><span><a href="index.html">Qt 4.8</a></span></li>
        <li class="shortCut-topleft-active"><a href="http://qt-project.org/doc/">ALL VERSIONS        </a></li>
      </ul>
     </div>
 <ul class="sf-menu" id="narrowmenu"> 
             <li><a href="#">API Lookup</a> 
                 <ul> 
                     <li><a href="classes.html">Class index</a></li> 
           <li><a href="functions.html">Function index</a></li> 
           <li><a href="modules.html">Modules</a></li> 
           <li><a href="namespaces.html">Namespaces</a></li> 
           <li><a href="qtglobal.html">Global Declarations</a></li> 
           <li><a href="qdeclarativeelements.html">QML elements</a></li> 
             </ul> 
             </li> 
             <li><a href="#">Qt Topics</a> 
                 <ul> 
                        <li><a href="qt-basic-concepts.html">Programming with Qt</a></li>  
                        <li><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li>  
                        <li><a href="qt-gui-concepts.html">UI Design with Qt</a></li>  
                        <li><a href="supported-platforms.html">Supported Platforms</a></li>  
                        <li><a href="technology-apis.html">Qt and Key Technologies</a></li>  
                        <li><a href="best-practices.html">How-To's and Best Practices</a></li>  
              </ul> 
                 </li> 
                 <li><a href="#">Examples</a> 
                     <ul> 
                       <li><a href="all-examples.html">Examples</a></li> 
                       <li><a href="tutorials.html">Tutorials</a></li> 
                       <li><a href="demos.html">Demos</a></li> 
                       <li><a href="qdeclarativeexamples.html">QML Examples</a></li> 
                </ul> 
                     </li> 
                 </ul> 
    </div>
  </div>
  <div class="wrapper">
    <div class="hd">
      <span></span>
    </div>
    <div class="bd group">
      <div class="sidebar">
        <div class="searchlabel">
          Search index:</div>
        <div class="search" id="sidebarsearch">
          <form id="qtdocsearch" action="" onsubmit="return false;">
            <fieldset>
              <input type="text" name="searchstring" id="pageType" value="" />
 <div id="resultdialog"> 
 <a href="#" id="resultclose">Close</a> 
 <p id="resultlinks" class="all"><a href="#" id="showallresults">All</a> | <a href="#" id="showapiresults">API</a> | <a href="#" id="showarticleresults">Articles</a> | <a href="#" id="showexampleresults">Examples</a></p> 
 <p id="searchcount" class="all"><span id="resultcount"></span><span id="apicount"></span><span id="articlecount"></span><span id="examplecount"></span>&nbsp;results:</p> 
 <ul id="resultlist" class="all"> 
 </ul> 
 </div> 
            </fieldset>
          </form>
        </div>
        <div class="box first bottombar" id="lookup">
          <h2 title="API Lookup"><span></span>
            API Lookup</h2>
          <div  id="list001" class="list">
          <ul id="ul001" >
              <li class="defaultLink"><a href="classes.html">Class index</a></li>
              <li class="defaultLink"><a href="functions.html">Function index</a></li>
              <li class="defaultLink"><a href="modules.html">Modules</a></li>
              <li class="defaultLink"><a href="namespaces.html">Namespaces</a></li>
              <li class="defaultLink"><a href="qtglobal.html">Global Declarations</a></li>
              <li class="defaultLink"><a href="qdeclarativeelements.html">QML elements</a></li>
            </ul> 
          </div>
        </div>
        <div class="box bottombar" id="topics">
          <h2 title="Qt Topics"><span></span>
            Qt Topics</h2>
          <div id="list002" class="list">
            <ul id="ul002" >
               <li class="defaultLink"><a href="qt-basic-concepts.html">Programming with Qt</a></li> 
               <li class="defaultLink"><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li> 
               <li class="defaultLink"><a href="qt-gui-concepts.html">UI Design with Qt</a></li> 
               <li class="defaultLink"><a href="supported-platforms.html">Supported Platforms</a></li>  
               <li class="defaultLink"><a href="technology-apis.html">Qt and Key Technologies</a></li> 
               <li class="defaultLink"><a href="best-practices.html">How-To's and Best Practices</a></li> 
            </ul>  
          </div>
        </div>
        <div class="box" id="examples">
          <h2 title="Examples"><span></span>
            Examples</h2>
          <div id="list003" class="list">
        <ul id="ul003">
              <li class="defaultLink"><a href="all-examples.html">Examples</a></li>
              <li class="defaultLink"><a href="tutorials.html">Tutorials</a></li>
              <li class="defaultLink"><a href="demos.html">Demos</a></li>
              <li class="defaultLink"><a href="qdeclarativeexamples.html">QML Examples</a></li>
            </ul> 
          </div>
        </div>
      </div>
      <div class="wrap">
        <div class="toolbar">
          <div class="breadcrumb toolblock">
            <ul>
              <li class="first"><a href="index.html">Home</a></li>
              <!--  Breadcrumbs go here -->
<li><a href="all-examples.html">Examples</a></li>
<li>Finger Paint Example</li>
            </ul>
          </div>
          <div class="toolbuttons toolblock">
            <ul>
              <li id="smallA" class="t_button">A</li>
              <li id="medA" class="t_button active">A</li>
              <li id="bigA" class="t_button">A</li>
              <li id="print" class="t_button"><a href="javascript:this.print();">
                <span>Print</span></a></li>
            </ul>
        </div>
        </div>
        <div class="content mainContent">
<h1 class="title">Finger Paint Example</h1>
<span class="subtitle"></span>
<!-- $$$touch/fingerpaint-description -->
<div class="descr"> <a name="details"></a>
<p>Files:</p>
<ul>
<li><a href="touch-fingerpaint-mainwindow-cpp.html">touch/fingerpaint/mainwindow.cpp</a></li>
<li><a href="touch-fingerpaint-mainwindow-h.html">touch/fingerpaint/mainwindow.h</a></li>
<li><a href="touch-fingerpaint-scribblearea-cpp.html">touch/fingerpaint/scribblearea.cpp</a></li>
<li><a href="touch-fingerpaint-scribblearea-h.html">touch/fingerpaint/scribblearea.h</a></li>
<li><a href="touch-fingerpaint-main-cpp.html">touch/fingerpaint/main.cpp</a></li>
<li><a href="touch-fingerpaint-fingerpaint-pro.html">touch/fingerpaint/fingerpaint.pro</a></li>
</ul>
<p>The Finger Paint example shows the use of a touchscreen with a custom widget to create a simple painting application.<p class="centerAlign"><img src="images/touch-fingerpaint-example.png" alt="" /></p><p>This example was specifically designed to work with a touchscreen, using <a href="qtouchevent.html">QTouchEvent</a> instead of <a href="qmouseevent.html">QMouseEvent</a> to handle user input over the custom widget. As a result, it is not possible to draw with the mouse cursor.</p>
</div>
<!-- @@@touch/fingerpaint -->
      </div>
    </div>
    </div> 
    <div class="ft">
      <span></span>
    </div>
  </div> 
  <div class="footer">
    <p>
      <acronym title="Copyright">&copy;</acronym> 2014 Digia Plc and/or its
      subsidiaries. Documentation contributions included herein are the copyrights of
      their respective owners.</p>
    <br />
    <p>
      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.</p>
    <p>
      Documentation sources may be obtained from <a href="http://www.qt-project.org">
      www.qt-project.org</a>.</p>
    <br />
    <p>
      Digia, Qt and their respective logos are trademarks of Digia Plc 
      in Finland and/or other countries worldwide. All other trademarks are property
      of their respective owners. <a title="Privacy Policy"
      href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
  </div>

  <script src="scripts/functions.js" type="text/javascript"></script>
</body>
</html>
