<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Graphics.UI.Gtk.Gdk.DisplayManager</title><link href="ocean.css" rel="stylesheet" type="text/css" title="Ocean" /><script src="haddock-util.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[
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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Graphics-UI-Gtk-Gdk-DisplayManager.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">gtk-0.12.0: Binding to the Gtk+ graphical user interface library.</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Portability</th><td>portable (depends on GHC)</td></tr><tr><th>Stability</th><td>provisional</td></tr><tr><th>Maintainer</th><td>gtk2hs-users@lists.sourceforge.net</td></tr></table><p class="caption">Graphics.UI.Gtk.Gdk.DisplayManager</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">Detail
</a></li><li><a href="#g:2">Class Hierarchy
</a></li><li><a href="#g:3">Types
</a></li><li><a href="#g:4">Methods
</a></li><li><a href="#g:5">Attributes
</a></li><li><a href="#g:6">Signals
</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>Maintains a list of all open GdkDisplays
</p><ul><li> Module available since Gdk version 2.2
</li></ul></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">data</span> <a href="#t:DisplayManager">DisplayManager</a> </li><li class="src short"><span class="keyword">class</span> <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> o => <a href="#t:DisplayManagerClass">DisplayManagerClass</a> o </li><li class="src short"><a href="#v:castToDisplayManager">castToDisplayManager</a> :: <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> obj => obj -> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></li><li class="src short"><a href="#v:toDisplayManager">toDisplayManager</a> :: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> o => o -> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></li><li class="src short"><a href="#v:displayManagerGet">displayManagerGet</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></li><li class="src short"><a href="#v:displayManagerListDisplays">displayManagerListDisplays</a> :: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> self => self -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> [<a href="Graphics-UI-Gtk-Gdk-Display.html#t:Display">Display</a>]</li><li class="src short"><a href="#v:displayManagerDefaultDisplay">displayManagerDefaultDisplay</a> :: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> self => <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-Attributes.html#t:Attr">Attr</a> self <a href="Graphics-UI-Gtk-Gdk-Display.html#t:Display">Display</a></li><li class="src short"><a href="#v:displayManagerOpened">displayManagerOpened</a> :: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> self => <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-Signals.html#t:Signal">Signal</a> self (<a href="Graphics-UI-Gtk-Gdk-Display.html#t:Display">Display</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a>)</li></ul></div><div id="interface"><h1 id="g:1">Detail
</h1><div class="doc"><p>The purpose of the <code><a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></code> singleton object is to offer
notification when displays appear or disappear or the default display
changes.
</p></div><h1 id="g:2">Class Hierarchy
</h1><div class="doc"><pre>
| <code><a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObject">GObject</a></code>
| +----DisplayManager
</pre></div><h1 id="g:3">Types
</h1><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:DisplayManager" class="def">DisplayManager</a> <a href="src/Graphics-UI-Gtk-Types.html#DisplayManager" class="link">Source</a></p><div class="subs instances"><p id="control.i:DisplayManager" class="caption collapser" onclick="toggleSection('i:DisplayManager')">Instances</p><div id="section.i:DisplayManager" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">class</span> <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> o => <a name="t:DisplayManagerClass" class="def">DisplayManagerClass</a> o <a href="src/Graphics-UI-Gtk-Types.html#DisplayManagerClass" class="link">Source</a></p><div class="subs instances"><p id="control.i:DisplayManagerClass" class="caption collapser" onclick="toggleSection('i:DisplayManagerClass')">Instances</p><div id="section.i:DisplayManagerClass" class="show"><table><tr><td class="src"><a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:castToDisplayManager" class="def">castToDisplayManager</a> :: <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> obj => obj -> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a><a href="src/Graphics-UI-Gtk-Types.html#castToDisplayManager" class="link">Source</a></p></div><div class="top"><p class="src"><a name="v:toDisplayManager" class="def">toDisplayManager</a> :: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> o => o -> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a><a href="src/Graphics-UI-Gtk-Types.html#toDisplayManager" class="link">Source</a></p></div><h1 id="g:4">Methods
</h1><div class="top"><p class="src"><a name="v:displayManagerGet" class="def">displayManagerGet</a><a href="src/Graphics-UI-Gtk-Gdk-DisplayManager.html#displayManagerGet" class="link">Source</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></td><td class="doc"><p>returns the singleton <code><a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></code> object.
</p></td></tr></table></div><div class="doc"><p>Returns the global <code><a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManager">DisplayManager</a></code> singleton; <code>parsePargs</code>, <code><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-List.html#v:init">init</a></code>, or
<code>initCheck</code> must have been called first.
</p></div></div><div class="top"><p class="src"><a name="v:displayManagerListDisplays" class="def">displayManagerListDisplays</a><a href="src/Graphics-UI-Gtk-Gdk-DisplayManager.html#displayManagerListDisplays" class="link">Source</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> self</td><td class="doc empty"> </td></tr><tr><td class="src">=> self</td><td class="doc empty"> </td></tr><tr><td class="src">-> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> [<a href="Graphics-UI-Gtk-Gdk-Display.html#t:Display">Display</a>]</td><td class="doc"><p>returns a newly allocated list of <code><a href="Graphics-UI-Gtk-Gdk-Display.html#t:Display">Display</a></code> objects.
</p></td></tr></table></div><div class="doc"><p>List all currently open displays.
</p></div></div><h1 id="g:5">Attributes
</h1><div class="top"><p class="src"><a name="v:displayManagerDefaultDisplay" class="def">displayManagerDefaultDisplay</a> :: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> self => <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-Attributes.html#t:Attr">Attr</a> self <a href="Graphics-UI-Gtk-Gdk-Display.html#t:Display">Display</a><a href="src/Graphics-UI-Gtk-Gdk-DisplayManager.html#displayManagerDefaultDisplay" class="link">Source</a></p><div class="doc"><p>The default display.
</p></div></div><h1 id="g:6">Signals
</h1><div class="top"><p class="src"><a name="v:displayManagerOpened" class="def">displayManagerOpened</a> :: <a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#t:DisplayManagerClass">DisplayManagerClass</a> self => <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-Signals.html#t:Signal">Signal</a> self (<a href="Graphics-UI-Gtk-Gdk-Display.html#t:Display">Display</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a>)<a href="src/Graphics-UI-Gtk-Gdk-DisplayManager.html#displayManagerOpened" class="link">Source</a></p><div class="doc"><p>The <code><a href="Graphics-UI-Gtk-Gdk-DisplayManager.html#v:displayManagerOpened">displayManagerOpened</a></code> signal is emitted when a display is opened.
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