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<td >Qt 5.12</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td >Qt Quick Input Handlers</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtquick-index.html">Qt 5.12.6 Reference Documentation</a></td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#input-handlers">Input Handlers</a></li>
<li class="level1"><a href="#key-features">Key Features</a></li>
<li class="level1"><a href="#related-information">Related Information</a></li>
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<h1 class="title">Qt Quick Input Handlers</h1>
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<p>Qt Quick Input Handlers are a set of QML types used to handle events from keyboard, touch, mouse, and stylus devices in a UI. In contrast to event-handling items, such as <a href="qml-qtquick-mousearea.html">MouseArea</a> and <a href="qml-qtquick-flickable.html">Flickable</a>, input handlers are explicitly non-visual, require less memory and are intended to be used in greater numbers: one handler instance per aspect of interaction. Each input handler instance handles certain events on behalf of its <code>parent</code> Item. Thus the visual and behavioral concerns are better separated, and the behavior is built up by finer-grained composition.</p>
<p>In Qt 5.10, these handlers were introduced in a separate Qt.labs.handlers module. Now they are included with Qt Quick since 5.12. The pre-existing <a href="qml-qtquick-keys.html">Keys</a> attached property is similar in concept, so we refer to the pointing-device-oriented handlers plus <code>Keys</code> together as the set of Input Handlers. We expect to offer more attached-property use cases in future versions of Qt.</p>
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<h2 id="input-handlers">Input Handlers</h2>
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<tr class="odd topAlign"><td class="tblName"><p><a href="qml-qtquick-draghandler.html">DragHandler</a></p></td><td class="tblDescr"><p>Handler for dragging</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qml-qtquick-hoverhandler.html">HoverHandler</a></p></td><td class="tblDescr"><p>Handler for mouse and tablet hover</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qml-qtquick-keynavigation.html">KeyNavigation</a></p></td><td class="tblDescr"><p>Supports key navigation by arrow keys</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qml-qtquick-keys.html">Keys</a></p></td><td class="tblDescr"><p>Provides key handling to Items</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qml-qtquick-pinchhandler.html">PinchHandler</a></p></td><td class="tblDescr"><p>Handler for pinch gestures</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qml-qtquick-pointhandler.html">PointHandler</a></p></td><td class="tblDescr"><p>Handler for reacting to a single touchpoint</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qml-qtquick-taphandler.html">TapHandler</a></p></td><td class="tblDescr"><p>Handler for taps and clicks</p></td></tr>
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<h2 id="key-features">Key Features</h2>
<p>Some of the key features are:</p>
<ul>
<li>Handle keystrokes within the focused Item</li>
<li>Handle gestures such as tapping or dragging regardless which device it comes from</li>
<li>Handle gestures from different classes of devices in different ways</li>
<li>Each Item can have unlimited Handlers</li>
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<h2 id="related-information">Related Information</h2>
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<li><a href="qtquick-index.html">Qt Quick</a></li>
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