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<td >Qt 5.12</td><td ><a href="qtscxml-index.html">Qt SCXML</a></td><td ><a href="examples-qtscxml.html">Qt SCXML Examples</a></td><td >Qt SCXML Media Player QML Example (Dynamic)</td></tr></table><table class="buildversion"><tr>
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<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="#using-the-ecmascript-data-model">Using the ECMAScript Data Model</a></li>
<li class="level1"><a href="#dynamically-loading-the-state-machine">Dynamically Loading the State Machine</a></li>
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<h1 class="title">Qt SCXML Media Player QML Example (Dynamic)</h1>
<span class="subtitle"></span>
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<p>A Qt Quick application that sends data to and receives it from a dynamically loaded ECMAScript data model.</p>
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<div class="descr"> <a name="details"></a>
<p class="centerAlign"><img src="images/mediaplayer.png" alt="" /></p><p><i>Media Player QML Example (Dynamic)</i> demonstrates how to access data from a dynamically loaded ECMAScript data model.</p>
<p>The UI is created using Qt Quick.</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="using-the-ecmascript-data-model"></a>
<h2 id="using-the-ecmascript-data-model">Using the ECMAScript Data Model</h2>
<p>We specify the data model as a value of the <i>datamodel</i> attribute of the <code><scxml></code> element in <i>mediaplayer-common/mediaplayer.scxml</i>:</p>
<pre class="cpp">
<scxml
xmlns="http://www.w3.org/2005/07/scxml"
version="1.0"
name="MediaPlayerStateMachine"
initial="stopped"
datamodel="ecmascript"
>
<datamodel>
<data id="media"/>
</datamodel>
</pre>
<a name="dynamically-loading-the-state-machine"></a>
<h2 id="dynamically-loading-the-state-machine">Dynamically Loading the State Machine</h2>
<p>We link against the Qt SCXML module by adding the following line to the example <i>.pro</i> file:</p>
<pre class="cpp">
QT += qml scxml
</pre>
<p>We dynamically create the state machine in <i>mediaplayer-commonMediaplayer.qml</i>:</p>
<pre class="cpp">
import QtScxml 5.8
Window {
id: root
property StateMachine stateMachine: scxmlLoader.stateMachine
property alias source: scxmlLoader.source
</pre>
<p>Files:</p>
<ul>
<li><a href="qtscxml-mediaplayer-qml-dynamic-mediaplayer-qml-dynamic-cpp.html">mediaplayer-qml-dynamic/mediaplayer-qml-dynamic.cpp</a></li>
<li><a href="qtscxml-mediaplayer-qml-dynamic-mediaplayer-qml-dynamic-pro.html">mediaplayer-qml-dynamic/mediaplayer-qml-dynamic.pro</a></li>
<li><a href="qtscxml-mediaplayer-qml-dynamic-mediaplayer-qml-dynamic-qml.html">mediaplayer-qml-dynamic/mediaplayer-qml-dynamic.qml</a></li>
<li><a href="qtscxml-mediaplayer-qml-dynamic-mediaplayer-qml-dynamic-qrc.html">mediaplayer-qml-dynamic/mediaplayer-qml-dynamic.qrc</a></li>
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distrib
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Mageia
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7
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armv7hl
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media
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core-updates
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by-pkgid
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6ed78e842caa17fd5c94d65d685685e0
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files
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