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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>GdkDisplayManager</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GDK Reference Manual"><link rel="up" href="reference.html" title="API Reference"><link rel="prev" href="GdkDisplay.html" title="GdkDisplay"><link rel="next" href="GdkScreen.html" title="GdkScreen"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="reference" href="reference.html" title="API Reference"><link rel="index" href="ix01.html" title="Index"><link rel="index" href="ix02.html" title="Index of deprecated symbols"><link rel="index" href="ix03.html" title="Index of new symbols in 2.2"><link rel="index" href="ix04.html" title="Index of new symbols in 2.4"><link rel="index" href="ix05.html" title="Index of new symbols in 2.6"><link 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href="#id3063696" class="shortcut">Top</a>  |  <a href="#id3063929" class="shortcut">Description</a>  |  <a href="#id3063843" class="shortcut">Object Hierarchy</a>  |  <a href="#id3063868" class="shortcut">Properties</a>  |  <a href="#id3063901" class="shortcut">Signals</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="GdkDisplayManager"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id3063696"></a><span class="refentrytitle">GdkDisplayManager</span></h2><p>GdkDisplayManager — Maintains a list of all open <span class="type">GdkDisplay</span>s</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <gdk/gdk.h> <a class="link" href="GdkDisplayManager.html#GdkDisplayManager-struct">GdkDisplayManager</a>;<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a>* <a class="link" href="GdkDisplayManager.html#gdk-display-manager-get">gdk_display_manager_get</a> (void);<a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a>* <a class="link" href="GdkDisplayManager.html#gdk-display-manager-get-default-display">gdk_display_manager_get_default_display</a> (<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a> *display_manager);void <a class="link" href="GdkDisplayManager.html#gdk-display-manager-set-default-display">gdk_display_manager_set_default_display</a> (<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a> *display_manager, <a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a> *display);<ahref="/usr/share/gtk-doc/html/glib/glib-Singly-Linked-Lists.html#GSList">GSList</a>* <a class="link" href="GdkDisplayManager.html#gdk-display-manager-list-displays">gdk_display_manager_list_displays</a> (<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a> *display_manager);<a class="link" href="gdk-Input-Devices.html#GdkDevice">GdkDevice</a>* <a class="link" href="GdkDisplayManager.html#gdk-display-get-core-pointer">gdk_display_get_core_pointer</a> (<a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a> *display);</pre></div><div class="refsect1" lang="en"><a name="id3063843"></a><h2>Object Hierarchy</h2><pre class="synopsis"> <ahref="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a> +----GdkDisplayManager</pre></div><div class="refsect1" lang="en"><a name="id3063868"></a><h2>Properties</h2><pre class="synopsis"> "<a class="link" href="GdkDisplayManager.html#GdkDisplayManager--default-display">default-display</a>" <a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a> : Read / Write</pre></div><div class="refsect1" lang="en"><a name="id3063901"></a><h2>Signals</h2><pre class="synopsis"> "<a class="link" href="GdkDisplayManager.html#GdkDisplayManager-display-opened">display-opened</a>" : Run Last</pre></div><div class="refsect1" lang="en"><a name="id3063929"></a><h2>Description</h2><p>The purpose of the <a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager"><span class="type">GdkDisplayManager</span></a> singleton object is to offernotification when displays appear or disappear or the default display changes.</p></div><div class="refsect1" lang="en"><a name="id3063954"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3063964"></a><h3><a name="GdkDisplayManager-struct"></a>GdkDisplayManager</h3><a class="indexterm" name="id3063977"></a><pre class="programlisting">typedef struct _GdkDisplayManager GdkDisplayManager;</pre><p>The <span class="structname">GdkDisplayManager</span> struct has no interesting fields.</p><p class="since">Since 2.2</p></div><hr><div class="refsect2" lang="en"><a name="id3064004"></a><h3><a name="gdk-display-manager-get"></a>gdk_display_manager_get ()</h3><a class="indexterm" name="id3064019"></a><pre class="programlisting"><a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a>* gdk_display_manager_get (void);</pre><p>Returns the global <a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager"><span class="type">GdkDisplayManager</span></a> singleton; <code class="function">gdk_parse_pargs()</code>,<a class="link" href="gdk-General.html#gdk-init"><code class="function">gdk_init()</code></a>, or <a class="link" href="gdk-General.html#gdk-init-check"><code class="function">gdk_init_check()</code></a> must have been called first.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td> the singleton <a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager"><span class="type">GdkDisplayManager</span></a> object.</td></tr></tbody></table></div><p class="since">Since 2.2</p></div><hr><div class="refsect2" lang="en"><a name="id3064115"></a><h3><a name="gdk-display-manager-get-default-display"></a>gdk_display_manager_get_default_display ()</h3><a class="indexterm" name="id3064131"></a><pre class="programlisting"><a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a>* gdk_display_manager_get_default_display (<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a> *display_manager);</pre><p>Gets the default <a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a>.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>display_manager</code></em> :</span></p></td><td> a <a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager"><span class="type">GdkDisplayManager</span></a> </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td> a <a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a>, or <ahref="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is no default display.</td></tr></tbody></table></div><p class="since">Since 2.2</p></div><hr><div class="refsect2" lang="en"><a name="id3064234"></a><h3><a name="gdk-display-manager-set-default-display"></a>gdk_display_manager_set_default_display ()</h3><a class="indexterm" name="id3064250"></a><pre class="programlisting">void gdk_display_manager_set_default_display (<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a> *display_manager, <a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a> *display);</pre><p>Sets <em class="parameter"><code>display</code></em> as the default display.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>display_manager</code></em> :</span></p></td><td> a <a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager"><span class="type">GdkDisplayManager</span></a></td></tr><tr><td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td><td> a <a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a></td></tr></tbody></table></div><p class="since">Since 2.2</p></div><hr><div class="refsect2" lang="en"><a name="id3064352"></a><h3><a name="gdk-display-manager-list-displays"></a>gdk_display_manager_list_displays ()</h3><a class="indexterm" name="id3064368"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Singly-Linked-Lists.html#GSList">GSList</a>* gdk_display_manager_list_displays (<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a> *display_manager);</pre><p>List all currently open displays.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>display_manager</code></em> :</span></p></td><td> a <a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager"><span class="type">GdkDisplayManager</span></a> </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td> a newly allocated <ahref="/usr/share/gtk-doc/html/glib/glib-Singly-Linked-Lists.html#GSList"><span class="type">GSList</span></a> of <a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a> objects. Free this list with <ahref="/usr/share/gtk-doc/html/glib/glib-Singly-Linked-Lists.html#g-slist-free"><code class="function">g_slist_free()</code></a> when you are done with it.</td></tr></tbody></table></div><p class="since">Since 2.2</p></div><hr><div class="refsect2" lang="en"><a name="id3064472"></a><h3><a name="gdk-display-get-core-pointer"></a>gdk_display_get_core_pointer ()</h3><a class="indexterm" name="id3064488"></a><pre class="programlisting"><a class="link" href="gdk-Input-Devices.html#GdkDevice">GdkDevice</a>* gdk_display_get_core_pointer (<a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a> *display);</pre><p>Returns the core pointer device for the given display</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td><td> a <a class="link" href="GdkDisplay.html" title="GdkDisplay"><span class="type">GdkDisplay</span></a></td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td> the core pointer device; this is owned by the display and should not be freed.</td></tr></tbody></table></div><p class="since">Since 2.2</p></div></div><div class="refsect1" lang="en"><a name="id3064565"></a><h2>Property Details</h2><div class="refsect2" lang="en"><a name="id3064576"></a><h3><a name="GdkDisplayManager--default-display"></a>The <code class="literal">"default-display"</code> property</h3><a class="indexterm" name="id3064592"></a><pre class="programlisting"> "default-display" <a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a> : Read / Write</pre><p>The default display for GDK.</p></div></div><div class="refsect1" lang="en"><a name="id3064617"></a><h2>Signal Details</h2><div class="refsect2" lang="en"><a name="id3064627"></a><h3><a name="GdkDisplayManager-display-opened"></a>The <code class="literal">"display-opened"</code> signal</h3><a class="indexterm" name="id3064644"></a><pre class="programlisting">void user_function (<a class="link" href="GdkDisplayManager.html" title="GdkDisplayManager">GdkDisplayManager</a> *display_manager, <a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a> *display, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> user_data) : Run Last</pre><p>The ::display_opened signal is emitted when a display is opened.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>display_manager</code></em> :</span></p></td><td> the object on which the signal is emitted</td></tr><tr><td><p><span class="term"><em class="parameter"><code>display</code></em> :</span></p></td><td> the opened display</td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td><td>user data set when the signal handler was connected.</td></tr></tbody></table></div><p>Since 2.2</p></div></div><div class="refsect1" lang="en"><a name="id3064746"></a><div class="refsect2" lang="en"><a name="id3064747"></a></div><hr><div class="refsect2" lang="en"><a name="id3064748"></a></div></div></div></body></html>⌨️ 快捷键说明
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