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qtdeclarative5-doc-5.12.6-1.mga7.noarch.rpm

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<td >Qt 5.12</td><td ><a href="qtqml-index.html">Qt QML</a></td><td ><a href="qtqml-qmlmodule.html">QML Types</a></td><td >url QML Basic Type</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#using-the-url-type">Using the url Type</a></li>
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<h1 class="title">url QML Basic Type</h1>
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<p>a resource locator.</p>
<p>The <code>url</code> type refers to a resource locator (like a file name, for example). It can be either absolute, e.g&#x2e; &quot;http://qt-project.org&quot;, or relative, e.g&#x2e; &quot;pics/logo.png&quot;. A relative URL is resolved relative to the URL of the containing component.</p>
<p>For example, the following assigns a valid URL to the Image::source property, which is of type <code>url</code>:</p>
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<p>When integrating with C++, note that any QUrl value <a href="qtqml-cppintegration-data.html">passed into QML from C++</a> is automatically converted into a <code>url</code> value, and vice-versa.</p>
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<h2 id="using-the-url-type">Using the url Type</h2>
<p>When a relative URL is written to a <code>url</code> type property, it is converted into a URL object, so <b>matching the URL value against the input string value will fail</b>. Instead, convert the string to a URL using Qt.resolvedUrl() for means of comparison, and use <code>toString()</code> to get the contents of the URL:</p>
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<p><b>Note: </b>When referring to files stored with the Qt Resource System from within QML, you should use &quot;qrc:///&quot; instead of &quot;:/&quot; as QML requires URL paths. Relative URLs resolved from within that file will use the same protocol.</p><p>Additionally, URLs may contain encoded characters using the 'percent-encoding' scheme specified by <a href="http://tools.ietf.org/html/rfc3986">RFC 3986</a>. These characters will be preserved within properties of type <code>url</code>, to allow QML code to construct precise URL values. An exception to this rule is the preemptive decoding of directory-separator characters (<code>'/'</code>) - these characters are decoded to allow the URL to be correctly classified.</p>
<p>For example, a local file containing a '#' character, which would normally be interpreted as the beginning of the URL 'fragment' element, can be accessed by encoding the characters of the file name:</p>
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<p>This basic type is provided by the QML language.</p>
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<p><b>See also </b><a href="qtqml-typesystem-basictypes.html">QML Basic Types</a>.</p>
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