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|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Events: GDK 2 Reference Manual</title>
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<td valign="top">
<h2><span class="refentrytitle"><a name="gdk2-Events.top_of_page"></a>Events</span></h2>
<p>Events</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gdk2-Events.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_proto_type">
<col class="functions_proto_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-events-pending" title="gdk_events_pending ()">gdk_events_pending</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-peek" title="gdk_event_peek ()">gdk_event_peek</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get" title="gdk_event_get ()">gdk_event_get</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get-graphics-expose" title="gdk_event_get_graphics_expose ()">gdk_event_get_graphics_expose</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-put" title="gdk_event_put ()">gdk_event_put</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-new" title="gdk_event_new ()">gdk_event_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-copy" title="gdk_event_copy ()">gdk_event_copy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-free" title="gdk_event_free ()">gdk_event_free</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">guint32</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get-time" title="gdk_event_get_time ()">gdk_event_get_time</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get-state" title="gdk_event_get_state ()">gdk_event_get_state</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get-axis" title="gdk_event_get_axis ()">gdk_event_get_axis</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get-coords" title="gdk_event_get_coords ()">gdk_event_get_coords</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get-root-coords" title="gdk_event_get_root_coords ()">gdk_event_get_root_coords</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-request-motions" title="gdk_event_request_motions ()">gdk_event_request_motions</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-handler-set" title="gdk_event_handler_set ()">gdk_event_handler_set</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gdk2-Events.html#GdkEventFunc" title="GdkEventFunc ()">*GdkEventFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-send-client-message" title="gdk_event_send_client_message ()">gdk_event_send_client_message</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-send-client-message-for-display" title="gdk_event_send_client_message_for_display ()">gdk_event_send_client_message_for_display</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-send-clientmessage-toall" title="gdk_event_send_clientmessage_toall ()">gdk_event_send_clientmessage_toall</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-add-client-message-filter" title="gdk_add_client_message_filter ()">gdk_add_client_message_filter</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-get-show-events" title="gdk_get_show_events ()">gdk_get_show_events</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-set-show-events" title="gdk_set_show_events ()">gdk_set_show_events</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-set-screen" title="gdk_event_set_screen ()">gdk_event_set_screen</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GdkScreen.html" title="GdkScreen"><span class="returnvalue">GdkScreen</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-event-get-screen" title="gdk_event_get_screen ()">gdk_event_get_screen</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="gdk2-Events.html#gdk-setting-get" title="gdk_setting_get ()">gdk_setting_get</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gdk2-Events.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="other_proto_type">
<col class="other_proto_name">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gdk2-Events.html#GdkEventType" title="enum GdkEventType">GdkEventType</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gdk2-Events.html#GdkEventMask" title="enum GdkEventMask">GdkEventMask</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="gdk2-Events.html#GDK-CURRENT-TIME:CAPS" title="GDK_CURRENT_TIME">GDK_CURRENT_TIME</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="gdk2-Events.html#GDK-PRIORITY-EVENTS:CAPS" title="GDK_PRIORITY_EVENTS">GDK_PRIORITY_EVENTS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="gdk2-Events.html#GDK-PRIORITY-REDRAW:CAPS" title="GDK_PRIORITY_REDRAW">GDK_PRIORITY_REDRAW</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gdk2-Events.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gdk/gdk.h>
</pre>
</div>
<div class="refsect1">
<a name="gdk2-Events.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="gdk2-Events.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gdk-events-pending"></a><h3>gdk_events_pending ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_events_pending (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Checks if any events are ready to be processed for any display.</p>
<div class="refsect3">
<a name="gdk-events-pending.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if any events are pending.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-peek"></a><h3>gdk_event_peek ()</h3>
<pre class="programlisting"><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
gdk_event_peek (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>If there is an event waiting in the event queue of some open
display, returns a copy of it. See <a class="link" href="GdkDisplay.html#gdk-display-peek-event" title="gdk_display_peek_event ()"><code class="function">gdk_display_peek_event()</code></a>.</p>
<div class="refsect3">
<a name="gdk-event-peek.returns"></a><h4>Returns</h4>
<p> a copy of the first <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> on some event queue, or <code class="literal">NULL</code> if no
events are in any queues. The returned <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> should be freed with
<a class="link" href="gdk2-Events.html#gdk-event-free" title="gdk_event_free ()"><code class="function">gdk_event_free()</code></a>.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get"></a><h3>gdk_event_get ()</h3>
<pre class="programlisting"><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
gdk_event_get (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Checks all open displays for a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> to process,to be processed
on, fetching events from the windowing system if necessary.
See <a class="link" href="GdkDisplay.html#gdk-display-get-event" title="gdk_display_get_event ()"><code class="function">gdk_display_get_event()</code></a>.</p>
<div class="refsect3">
<a name="gdk-event-get.returns"></a><h4>Returns</h4>
<p> the next <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> to be processed, or <code class="literal">NULL</code> if no events
are pending. The returned <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> should be freed with <a class="link" href="gdk2-Events.html#gdk-event-free" title="gdk_event_free ()"><code class="function">gdk_event_free()</code></a>.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get-graphics-expose"></a><h3>gdk_event_get_graphics_expose ()</h3>
<pre class="programlisting"><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
gdk_event_get_graphics_expose (<em class="parameter"><code><a class="link" href="gdk2-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *window</code></em>);</pre>
<div class="warning"><p><code class="literal">gdk_event_get_graphics_expose</code> has been deprecated since version 2.18 and should not be used in newly-written code.</p></div>
<p>Waits for a GraphicsExpose or NoExpose event from the X server.
This is used in the <a href="https://developer.gnome.org/gtk4/GtkText.html#GtkText-struct"><span class="type">GtkText</span></a> and <span class="type">GtkCList</span> widgets in GTK+ to make sure any
GraphicsExpose events are handled before the widget is scrolled.</p>
<div class="refsect3">
<a name="gdk-event-get-graphics-expose.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>window</p></td>
<td class="parameter_description"><p>the <a class="link" href="gdk2-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> to wait for the events for.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-get-graphics-expose.returns"></a><h4>Returns</h4>
<p> a <a class="link" href="gdk2-Event-Structures.html#GdkEventExpose" title="struct GdkEventExpose"><span class="type">GdkEventExpose</span></a> if a GraphicsExpose was received, or <code class="literal">NULL</code> if a
NoExpose event was received.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-put"></a><h3>gdk_event_put ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_event_put (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>);</pre>
<p>Appends a copy of the given event onto the front of the event
queue for event->any.window's display, or the default event
queue if event->any.window is <code class="literal">NULL</code>. See <a class="link" href="GdkDisplay.html#gdk-display-put-event" title="gdk_display_put_event ()"><code class="function">gdk_display_put_event()</code></a>.</p>
<div class="refsect3">
<a name="gdk-event-put.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-new"></a><h3>gdk_event_new ()</h3>
<pre class="programlisting"><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
gdk_event_new (<em class="parameter"><code><a class="link" href="gdk2-Events.html#GdkEventType" title="enum GdkEventType"><span class="type">GdkEventType</span></a> type</code></em>);</pre>
<p>Creates a new event of the given type. All fields are set to 0.</p>
<div class="refsect3">
<a name="gdk-event-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>type</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Events.html#GdkEventType" title="enum GdkEventType"><span class="type">GdkEventType</span></a> </p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-new.returns"></a><h4>Returns</h4>
<p> a newly-allocated <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a>. The returned <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a>
should be freed with <a class="link" href="gdk2-Events.html#gdk-event-free" title="gdk_event_free ()"><code class="function">gdk_event_free()</code></a>.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-2.html#api-index-2.2">2.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-copy"></a><h3>gdk_event_copy ()</h3>
<pre class="programlisting"><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="returnvalue">GdkEvent</span></a> *
gdk_event_copy (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>);</pre>
<p>Copies a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a>, copying or incrementing the reference count of the
resources associated with it (e.g. <a class="link" href="gdk2-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>'s and strings).</p>
<div class="refsect3">
<a name="gdk-event-copy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-copy.returns"></a><h4>Returns</h4>
<p> a copy of <em class="parameter"><code>event</code></em>
. The returned <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> should be freed with
<a class="link" href="gdk2-Events.html#gdk-event-free" title="gdk_event_free ()"><code class="function">gdk_event_free()</code></a>.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-free"></a><h3>gdk_event_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_event_free (<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>);</pre>
<p>Frees a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a>, freeing or decrementing any resources associated with it.
Note that this function should only be called with events returned from
functions such as <a class="link" href="gdk2-Events.html#gdk-event-peek" title="gdk_event_peek ()"><code class="function">gdk_event_peek()</code></a>, <a class="link" href="gdk2-Events.html#gdk-event-get" title="gdk_event_get ()"><code class="function">gdk_event_get()</code></a>,
<a class="link" href="gdk2-Events.html#gdk-event-get-graphics-expose" title="gdk_event_get_graphics_expose ()"><code class="function">gdk_event_get_graphics_expose()</code></a> and <a class="link" href="gdk2-Events.html#gdk-event-copy" title="gdk_event_copy ()"><code class="function">gdk_event_copy()</code></a> and <a class="link" href="gdk2-Events.html#gdk-event-new" title="gdk_event_new ()"><code class="function">gdk_event_new()</code></a>.</p>
<div class="refsect3">
<a name="gdk-event-free.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get-time"></a><h3>gdk_event_get_time ()</h3>
<pre class="programlisting"><span class="returnvalue">guint32</span>
gdk_event_get_time (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>);</pre>
<p>Returns the time stamp from <em class="parameter"><code>event</code></em>
, if there is one; otherwise
returns <a class="link" href="gdk2-Events.html#GDK-CURRENT-TIME:CAPS" title="GDK_CURRENT_TIME"><span class="type">GDK_CURRENT_TIME</span></a>. If <em class="parameter"><code>event</code></em>
is <code class="literal">NULL</code>, returns <a class="link" href="gdk2-Events.html#GDK-CURRENT-TIME:CAPS" title="GDK_CURRENT_TIME"><span class="type">GDK_CURRENT_TIME</span></a>.</p>
<div class="refsect3">
<a name="gdk-event-get-time.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-get-time.returns"></a><h4>Returns</h4>
<p> time stamp field from <em class="parameter"><code>event</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get-state"></a><h3>gdk_event_get_state ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_event_get_state (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><a class="link" href="gdk2-Windows.html#GdkModifierType" title="enum GdkModifierType"><span class="type">GdkModifierType</span></a> *state</code></em>);</pre>
<p>If the event contains a "state" field, puts that field in <em class="parameter"><code>state</code></em>
. Otherwise
stores an empty state (0). Returns <code class="literal">TRUE</code> if there was a state field
in the event. <em class="parameter"><code>event</code></em>
may be <code class="literal">NULL</code>, in which case it's treated
as if the event had no state field.</p>
<div class="refsect3">
<a name="gdk-event-get-state.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> or NULL</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>state</p></td>
<td class="parameter_description"><p>return location for state. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-get-state.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if there was a state field in the event </p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get-axis"></a><h3>gdk_event_get_axis ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_event_get_axis (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><a class="link" href="gdk2-Input-Devices.html#GdkAxisUse" title="enum GdkAxisUse"><span class="type">GdkAxisUse</span></a> axis_use</code></em>,
<em class="parameter"><code><span class="type">gdouble</span> *value</code></em>);</pre>
<p>Extract the axis value for a particular axis use from
an event structure.</p>
<div class="refsect3">
<a name="gdk-event-get-axis.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>axis_use</p></td>
<td class="parameter_description"><p>the axis use to look for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>location to store the value found. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-get-axis.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the specified axis was found, otherwise <code class="literal">FALSE</code></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get-coords"></a><h3>gdk_event_get_coords ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_event_get_coords (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><span class="type">gdouble</span> *x_win</code></em>,
<em class="parameter"><code><span class="type">gdouble</span> *y_win</code></em>);</pre>
<p>Extract the event window relative x/y coordinates from an event.</p>
<div class="refsect3">
<a name="gdk-event-get-coords.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>x_win</p></td>
<td class="parameter_description"><p>location to put event window x coordinate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>y_win</p></td>
<td class="parameter_description"><p>location to put event window y coordinate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-get-coords.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the event delivered event window coordinates</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get-root-coords"></a><h3>gdk_event_get_root_coords ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_event_get_root_coords (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><span class="type">gdouble</span> *x_root</code></em>,
<em class="parameter"><code><span class="type">gdouble</span> *y_root</code></em>);</pre>
<p>Extract the root window relative x/y coordinates from an event.</p>
<div class="refsect3">
<a name="gdk-event-get-root-coords.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>x_root</p></td>
<td class="parameter_description"><p>location to put root window x coordinate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>y_root</p></td>
<td class="parameter_description"><p>location to put root window y coordinate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-get-root-coords.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the event delivered root window coordinates</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-request-motions"></a><h3>gdk_event_request_motions ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_event_request_motions (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEventMotion" title="struct GdkEventMotion"><span class="type">GdkEventMotion</span></a> *event</code></em>);</pre>
<p>Request more motion notifies if <em class="parameter"><code>event</code></em>
is a motion notify hint event.
This function should be used instead of <a class="link" href="gdk2-Windows.html#gdk-window-get-pointer" title="gdk_window_get_pointer ()"><code class="function">gdk_window_get_pointer()</code></a> to
request further motion notifies, because it also works for extension
events where motion notifies are provided for devices other than the
core pointer. Coordinate extraction, processing and requesting more
motion events from a <a class="link" href="gdk2-Events.html#GDK-MOTION-NOTIFY:CAPS"><code class="literal">GDK_MOTION_NOTIFY</code></a> event usually works like this:</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="p">{</span>
<span class="cm">/* motion_event handler */</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">motion_event</span><span class="o">-></span><span class="n">x</span><span class="p">;</span>
<span class="n">y</span> <span class="o">=</span> <span class="n">motion_event</span><span class="o">-></span><span class="n">y</span><span class="p">;</span>
<span class="cm">/* handle (x,y) motion */</span>
<span class="n">gdk_event_request_motions</span> <span class="p">(</span><span class="n">motion_event</span><span class="p">);</span> <span class="cm">/* handles is_hint events */</span>
<span class="p">}</span></pre></td>
</tr>
</tbody>
</table>
</div>
<p></p>
<div class="refsect3">
<a name="gdk-event-request-motions.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a valid <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-12.html#api-index-2.12">2.12</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-handler-set"></a><h3>gdk_event_handler_set ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_event_handler_set (<em class="parameter"><code><a class="link" href="gdk2-Events.html#GdkEventFunc" title="GdkEventFunc ()"><span class="type">GdkEventFunc</span></a> func</code></em>,
<em class="parameter"><code><span class="type">gpointer</span> data</code></em>,
<em class="parameter"><code><span class="type">GDestroyNotify</span> notify</code></em>);</pre>
<p>Sets the function to call to handle all events from GDK.</p>
<p>Note that GTK+ uses this to install its own event handler, so it is
usually not useful for GTK+ applications. (Although an application
can call this function then call <code class="function">gtk_main_do_event()</code> to pass
events to GTK+.)</p>
<div class="refsect3">
<a name="gdk-event-handler-set.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p>the function to call to handle events from GDK.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>user data to pass to the function. </p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>notify</p></td>
<td class="parameter_description"><p>the function to call when the handler function is removed, i.e. when
<a class="link" href="gdk2-Events.html#gdk-event-handler-set" title="gdk_event_handler_set ()"><code class="function">gdk_event_handler_set()</code></a> is called with another event handler.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GdkEventFunc"></a><h3>GdkEventFunc ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*GdkEventFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><span class="type">gpointer</span> data</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-send-client-message"></a><h3>gdk_event_send_client_message ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_event_send_client_message (<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkNativeWindow" title="GdkNativeWindow"><span class="type">GdkNativeWindow</span></a> winid</code></em>);</pre>
<p>Sends an X ClientMessage event to a given window (which must be
on the default <a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a>.)
This could be used for communicating between different applications,
though the amount of data is limited to 20 bytes.</p>
<div class="refsect3">
<a name="gdk-event-send-client-message.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>the <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> to send, which should be a <a class="link" href="gdk2-Event-Structures.html#GdkEventClient" title="struct GdkEventClient"><span class="type">GdkEventClient</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>winid</p></td>
<td class="parameter_description"><p>the window to send the X ClientMessage event to.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-send-client-message.returns"></a><h4>Returns</h4>
<p> non-zero on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-send-client-message-for-display"></a><h3>gdk_event_send_client_message_for_display ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_event_send_client_message_for_display
(<em class="parameter"><code><a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a> *display</code></em>,
<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkNativeWindow" title="GdkNativeWindow"><span class="type">GdkNativeWindow</span></a> winid</code></em>);</pre>
<p>On X11, sends an X ClientMessage event to a given window. On
Windows, sends a message registered with the name
GDK_WIN32_CLIENT_MESSAGE.</p>
<p>This could be used for communicating between different
applications, though the amount of data is limited to 20 bytes on
X11, and to just four bytes on Windows.</p>
<div class="refsect3">
<a name="gdk-event-send-client-message-for-display.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>display</p></td>
<td class="parameter_description"><p>the <a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a> for the window where the message is to be sent.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>the <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> to send, which should be a <a class="link" href="gdk2-Event-Structures.html#GdkEventClient" title="struct GdkEventClient"><span class="type">GdkEventClient</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>winid</p></td>
<td class="parameter_description"><p>the window to send the client message to.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-send-client-message-for-display.returns"></a><h4>Returns</h4>
<p> non-zero on success.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-2.html#api-index-2.2">2.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-send-clientmessage-toall"></a><h3>gdk_event_send_clientmessage_toall ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_event_send_clientmessage_toall (<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>);</pre>
<p>Sends an X ClientMessage event to all toplevel windows on the default
<a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a>.</p>
<p>Toplevel windows are determined by checking for the WM_STATE property, as
described in the Inter-Client Communication Conventions Manual (ICCCM).
If no windows are found with the WM_STATE property set, the message is sent
to all children of the root window.</p>
<div class="refsect3">
<a name="gdk-event-send-clientmessage-toall.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>the <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> to send, which should be a <a class="link" href="gdk2-Event-Structures.html#GdkEventClient" title="struct GdkEventClient"><span class="type">GdkEventClient</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-add-client-message-filter"></a><h3>gdk_add_client_message_filter ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_add_client_message_filter (<em class="parameter"><code><a class="link" href="gdk2-Properties-and-Atoms.html#GdkAtom" title="GdkAtom"><span class="type">GdkAtom</span></a> message_type</code></em>,
<em class="parameter"><code><a class="link" href="gdk2-Windows.html#GdkFilterFunc" title="GdkFilterFunc ()"><span class="type">GdkFilterFunc</span></a> func</code></em>,
<em class="parameter"><code><span class="type">gpointer</span> data</code></em>);</pre>
<p>Adds a filter to the default display to be called when X ClientMessage events
are received. See <a class="link" href="GdkDisplay.html#gdk-display-add-client-message-filter" title="gdk_display_add_client_message_filter ()"><code class="function">gdk_display_add_client_message_filter()</code></a>.</p>
<div class="refsect3">
<a name="gdk-add-client-message-filter.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>message_type</p></td>
<td class="parameter_description"><p>the type of ClientMessage events to receive. This will be
checked against the <em class="structfield"><code>message_type</code></em> field of the
XClientMessage event struct.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p>the function to call to process the event.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>user data to pass to <em class="parameter"><code>func</code></em>
. </p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-get-show-events"></a><h3>gdk_get_show_events ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_get_show_events (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Gets whether event debugging output is enabled.</p>
<div class="refsect3">
<a name="gdk-get-show-events.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if event debugging output is enabled.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-set-show-events"></a><h3>gdk_set_show_events ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_set_show_events (<em class="parameter"><code><span class="type">gboolean</span> show_events</code></em>);</pre>
<p>Sets whether a trace of received events is output.
Note that GTK+ must be compiled with debugging (that is,
configured using the <code class="option">--enable-debug</code> option)
to use this option.</p>
<div class="refsect3">
<a name="gdk-set-show-events.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>show_events</p></td>
<td class="parameter_description"><p><code class="literal">TRUE</code> to output event debugging information.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-set-screen"></a><h3>gdk_event_set_screen ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_event_set_screen (<em class="parameter"><code><a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>,
<em class="parameter"><code><a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a> *screen</code></em>);</pre>
<p>Sets the screen for <em class="parameter"><code>event</code></em>
to <em class="parameter"><code>screen</code></em>
. The event must
have been allocated by GTK+, for instance, by
<a class="link" href="gdk2-Events.html#gdk-event-copy" title="gdk_event_copy ()"><code class="function">gdk_event_copy()</code></a>.</p>
<div class="refsect3">
<a name="gdk-event-set-screen.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>screen</p></td>
<td class="parameter_description"><p>a <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-2.html#api-index-2.2">2.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-event-get-screen"></a><h3>gdk_event_get_screen ()</h3>
<pre class="programlisting"><a class="link" href="GdkScreen.html" title="GdkScreen"><span class="returnvalue">GdkScreen</span></a> *
gdk_event_get_screen (<em class="parameter"><code>const <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a> *event</code></em>);</pre>
<p>Returns the screen for the event. The screen is
typically the screen for <code class="literal">event->any.window</code>, but
for events such as mouse events, it is the screen
where the pointer was when the event occurs -
that is, the screen which has the root window
to which <code class="literal">event->motion.x_root</code> and
<code class="literal">event->motion.y_root</code> are relative.</p>
<div class="refsect3">
<a name="gdk-event-get-screen.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a <a class="link" href="gdk2-Event-Structures.html#GdkEvent" title="union GdkEvent"><span class="type">GdkEvent</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-event-get-screen.returns"></a><h4>Returns</h4>
<p> the screen for the event</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-2.html#api-index-2.2">2.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-setting-get"></a><h3>gdk_setting_get ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gdk_setting_get (<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
<em class="parameter"><code><span class="type">GValue</span> *value</code></em>);</pre>
<p>Obtains a desktop-wide setting, such as the double-click time,
for the default screen. See <a class="link" href="GdkScreen.html#gdk-screen-get-setting" title="gdk_screen_get_setting ()"><code class="function">gdk_screen_get_setting()</code></a>.</p>
<div class="refsect3">
<a name="gdk-setting-get.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>the name of the setting.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>location to store the value of the setting.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-setting-get.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the setting existed and a value was stored
in <em class="parameter"><code>value</code></em>
, <code class="literal">FALSE</code> otherwise.</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="gdk2-Events.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GdkEventType"></a><h3>enum GdkEventType</h3>
<div class="refsect3">
<a name="GdkEventType.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GDK-NOTHING:CAPS"></a>GDK_NOTHING</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DELETE:CAPS"></a>GDK_DELETE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DESTROY:CAPS"></a>GDK_DESTROY</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-EXPOSE:CAPS"></a>GDK_EXPOSE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-MOTION-NOTIFY:CAPS"></a>GDK_MOTION_NOTIFY</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON-PRESS:CAPS"></a>GDK_BUTTON_PRESS</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-2BUTTON-PRESS:CAPS"></a>GDK_2BUTTON_PRESS</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-3BUTTON-PRESS:CAPS"></a>GDK_3BUTTON_PRESS</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON-RELEASE:CAPS"></a>GDK_BUTTON_RELEASE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-KEY-PRESS:CAPS"></a>GDK_KEY_PRESS</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-KEY-RELEASE:CAPS"></a>GDK_KEY_RELEASE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-ENTER-NOTIFY:CAPS"></a>GDK_ENTER_NOTIFY</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-LEAVE-NOTIFY:CAPS"></a>GDK_LEAVE_NOTIFY</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-FOCUS-CHANGE:CAPS"></a>GDK_FOCUS_CHANGE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-CONFIGURE:CAPS"></a>GDK_CONFIGURE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-MAP:CAPS"></a>GDK_MAP</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-UNMAP:CAPS"></a>GDK_UNMAP</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-PROPERTY-NOTIFY:CAPS"></a>GDK_PROPERTY_NOTIFY</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-SELECTION-CLEAR:CAPS"></a>GDK_SELECTION_CLEAR</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-SELECTION-REQUEST:CAPS"></a>GDK_SELECTION_REQUEST</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-SELECTION-NOTIFY:CAPS"></a>GDK_SELECTION_NOTIFY</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-PROXIMITY-IN:CAPS"></a>GDK_PROXIMITY_IN</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-PROXIMITY-OUT:CAPS"></a>GDK_PROXIMITY_OUT</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DRAG-ENTER:CAPS"></a>GDK_DRAG_ENTER</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DRAG-LEAVE:CAPS"></a>GDK_DRAG_LEAVE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DRAG-MOTION:CAPS"></a>GDK_DRAG_MOTION</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DRAG-STATUS:CAPS"></a>GDK_DRAG_STATUS</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DROP-START:CAPS"></a>GDK_DROP_START</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DROP-FINISHED:CAPS"></a>GDK_DROP_FINISHED</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-CLIENT-EVENT:CAPS"></a>GDK_CLIENT_EVENT</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-VISIBILITY-NOTIFY:CAPS"></a>GDK_VISIBILITY_NOTIFY</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-NO-EXPOSE:CAPS"></a>GDK_NO_EXPOSE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-SCROLL:CAPS"></a>GDK_SCROLL</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-WINDOW-STATE:CAPS"></a>GDK_WINDOW_STATE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-SETTING:CAPS"></a>GDK_SETTING</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-OWNER-CHANGE:CAPS"></a>GDK_OWNER_CHANGE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-GRAB-BROKEN:CAPS"></a>GDK_GRAB_BROKEN</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-DAMAGE:CAPS"></a>GDK_DAMAGE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-EVENT-LAST:CAPS"></a>GDK_EVENT_LAST</p></td>
<td> </td>
<td> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GdkEventMask"></a><h3>enum GdkEventMask</h3>
<div class="refsect3">
<a name="GdkEventMask.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GDK-EXPOSURE-MASK:CAPS"></a>GDK_EXPOSURE_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-POINTER-MOTION-MASK:CAPS"></a>GDK_POINTER_MOTION_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-POINTER-MOTION-HINT-MASK:CAPS"></a>GDK_POINTER_MOTION_HINT_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON-MOTION-MASK:CAPS"></a>GDK_BUTTON_MOTION_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON1-MOTION-MASK:CAPS"></a>GDK_BUTTON1_MOTION_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON2-MOTION-MASK:CAPS"></a>GDK_BUTTON2_MOTION_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON3-MOTION-MASK:CAPS"></a>GDK_BUTTON3_MOTION_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON-PRESS-MASK:CAPS"></a>GDK_BUTTON_PRESS_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-BUTTON-RELEASE-MASK:CAPS"></a>GDK_BUTTON_RELEASE_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-KEY-PRESS-MASK:CAPS"></a>GDK_KEY_PRESS_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-KEY-RELEASE-MASK:CAPS"></a>GDK_KEY_RELEASE_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-ENTER-NOTIFY-MASK:CAPS"></a>GDK_ENTER_NOTIFY_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-LEAVE-NOTIFY-MASK:CAPS"></a>GDK_LEAVE_NOTIFY_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-FOCUS-CHANGE-MASK:CAPS"></a>GDK_FOCUS_CHANGE_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-STRUCTURE-MASK:CAPS"></a>GDK_STRUCTURE_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-PROPERTY-CHANGE-MASK:CAPS"></a>GDK_PROPERTY_CHANGE_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-VISIBILITY-NOTIFY-MASK:CAPS"></a>GDK_VISIBILITY_NOTIFY_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-PROXIMITY-IN-MASK:CAPS"></a>GDK_PROXIMITY_IN_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-PROXIMITY-OUT-MASK:CAPS"></a>GDK_PROXIMITY_OUT_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-SUBSTRUCTURE-MASK:CAPS"></a>GDK_SUBSTRUCTURE_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-SCROLL-MASK:CAPS"></a>GDK_SCROLL_MASK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GDK-ALL-EVENTS-MASK:CAPS"></a>GDK_ALL_EVENTS_MASK</p></td>
<td> </td>
<td> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GDK-CURRENT-TIME:CAPS"></a><h3>GDK_CURRENT_TIME</h3>
<pre class="programlisting">#define GDK_CURRENT_TIME 0L
</pre>
</div>
<hr>
<div class="refsect2">
<a name="GDK-PRIORITY-EVENTS:CAPS"></a><h3>GDK_PRIORITY_EVENTS</h3>
<pre class="programlisting">#define GDK_PRIORITY_EVENTS</pre>
</div>
<hr>
<div class="refsect2">
<a name="GDK-PRIORITY-REDRAW:CAPS"></a><h3>GDK_PRIORITY_REDRAW</h3>
<pre class="programlisting">#define GDK_PRIORITY_REDRAW (G_PRIORITY_HIGH_IDLE + 20)
</pre>
</div>
</div>
</div>
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