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<h3 class="section">Input Events</h3> <p>The Emacs command loop reads a sequence of <em>input events</em> that represent keyboard or mouse activity, or system events sent to Emacs. The events for keyboard activity are characters or symbols; other events are always lists. This section describes the representation and meaning of input events in detail. </p> <dl> <dt id="eventp">Function: <strong>eventp</strong> <em>object</em>
</dt> <dd>
<p>This function returns non-<code>nil</code> if <var>object</var> is an input event or event type. </p> <p>Note that any non-<code>nil</code> symbol might be used as an event or an event type; <code>eventp</code> cannot distinguish whether a symbol is intended by Lisp code to be used as an event. </p>
</dd>
</dl> <table class="menu" border="0" cellspacing="0"> <tr>
<td align="left" valign="top">• <a href="keyboard-events" accesskey="1">Keyboard Events</a>
</td>
<td> </td>
<td align="left" valign="top">Ordinary characters – keys with symbols on them. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="function-keys" accesskey="2">Function Keys</a>
</td>
<td> </td>
<td align="left" valign="top">Function keys – keys with names, not symbols. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="mouse-events" accesskey="3">Mouse Events</a>
</td>
<td> </td>
<td align="left" valign="top">Overview of mouse events. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="click-events" accesskey="4">Click Events</a>
</td>
<td> </td>
<td align="left" valign="top">Pushing and releasing a mouse button. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="drag-events" accesskey="5">Drag Events</a>
</td>
<td> </td>
<td align="left" valign="top">Moving the mouse before releasing the button. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="button_002ddown-events" accesskey="6">Button-Down Events</a>
</td>
<td> </td>
<td align="left" valign="top">A button was pushed and not yet released. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="repeat-events" accesskey="7">Repeat Events</a>
</td>
<td> </td>
<td align="left" valign="top">Double and triple click (or drag, or down). </td>
</tr> <tr>
<td align="left" valign="top">• <a href="motion-events" accesskey="8">Motion Events</a>
</td>
<td> </td>
<td align="left" valign="top">Just moving the mouse, not pushing a button. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="focus-events" accesskey="9">Focus Events</a>
</td>
<td> </td>
<td align="left" valign="top">Moving the mouse between frames. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="misc-events">Misc Events</a>
</td>
<td> </td>
<td align="left" valign="top">Other events the system can generate. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="event-examples">Event Examples</a>
</td>
<td> </td>
<td align="left" valign="top">Examples of the lists for mouse events. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="classifying-events">Classifying Events</a>
</td>
<td> </td>
<td align="left" valign="top">Finding the modifier keys in an event symbol. Event types. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="accessing-mouse">Accessing Mouse</a>
</td>
<td> </td>
<td align="left" valign="top">Functions to extract info from mouse events. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="accessing-scroll">Accessing Scroll</a>
</td>
<td> </td>
<td align="left" valign="top">Functions to get info from scroll bar events. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="strings-of-events">Strings of Events</a>
</td>
<td> </td>
<td align="left" valign="top">Special considerations for putting keyboard character events in a string. </td>
</tr> </table><div class="_attribution">
<p class="_attribution-p">
Copyright © 1990-1996, 1998-2022 Free Software Foundation, Inc. <br>Licensed under the GNU GPL license.<br>
<a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Input-Events.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Input-Events.html</a>
</p>
</div>
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