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<concept id="GUID-C11AF871-56C8-4EA4-A1E0-E2B23372EF84" xml:lang="en"><title>Touch
down and hold</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>Touch down and hold is used, for example, to open the stylus pop-up menu.
It is also referred as long tap. Applications can use an animation (starts
after 0.15 seconds from the start of a stylus touch down event) to indicate
that a Touch down and hold action has been initiated.</p>
<p>On the whole, touch down and hold may be difficult for users to find, and
therefore its use should be considered carefully. As in the case of task swapping,
the use of touch down and hold should aim at being analogous to using a long
key press on the hardware keys.</p>
<section id="GUID-F3F82BBF-587D-471E-A2DE-E9248077EE0A"><title>Using
touch down and hold events in C++ applications</title><p>The API to use for
receiving touch down and hold events in applications or controls is the <xref href="GUID-92018B6B-3CBB-434D-9E61-F271C67E98E3.dita">Touch UI utilities API</xref>.</p><p>Use
the class <codeph>CAknLongTapDetector</codeph> to receive touch down and hold
events.</p><p>The long tap handler must inherit from the class <xref href="GUID-8ABC81C9-1D07-3D81-B744-BE5275ED61CA.dita"><apiname>MAknLongTapDetectorCallBack</apiname></xref> and
implement the <xref href="GUID-8ABC81C9-1D07-3D81-B744-BE5275ED61CA.dita#GUID-8ABC81C9-1D07-3D81-B744-BE5275ED61CA/GUID-DF019AAA-475C-3C96-BB77-5CC167CF4C3C"><apiname>MAknLongTapDetectorCallBack::HandleLongTapEventL()</apiname></xref> callback
function.</p></section>
</conbody></concept>