<AssemblyPublicKey>[00 24 00 00 04 80 00 00 94 00 00 00 06 02 00 00 00 24 00 00 52 53 41 31 00 04 00 00 01 00 01 00 71 EB 6C 55 75 52 9C BF 72 44 F7 A6 EA 05 62 84 F9 EA E0 3B CF F2 CC 13 2C 9C 49 0A B3 09 EA B0 B5 6B CE 44 9D F5 03 D9 C0 A8 1E 52 05 85 CD BE 70 E2 FB 90 43 4B AC 04 FA 62 22 A8 00 98 B7 A1 A7 B3 AF 99 1A 41 23 24 BB 43 25 F6 B8 65 BB 64 EB F6 D1 C2 06 D5 73 2D DF BC 70 A7 38 9E E5 3E 0C 24 6E 32 79 74 1A D0 05 03 E4 98 42 E1 9B F3 7B 19 8B 40 21 26 CB 36 89 C2 EA 64 96 A4 7C B4]</AssemblyPublicKey>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <linklocation="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
<summary>A container which can hide its child</summary>
<remarks>
<para>
A <seecref="T:Gtk.Expander"/> allows the user to hide or show its child by clicking on an expander triangle similar to the triangles used in a <seecref="T:Gtk.TreeView"/>.
</para>
<para>
Normally you use an expander as you would use any other descendant of <seecref="T:Gtk.Bin"/>; you create the child widget and use <seecref="M:Gtk.Container.Add()"/> to add it to the expander. When the expander is toggled, it will take care of showing and hiding the child automatically.
</para>
<example>
<codelang="C#">
using System;
using Gtk;
class DemoExpander : Gtk.Window
{
static void Main ()
{
Application.Init ();
new DemoExpander ();
Application.Run ();
}
DemoExpander () : base ("Demo Expander")
{
this.BorderWidth = 10;
this.DeleteEvent += new DeleteEventHandler (OnWindowDelete);
VBox vbox = new VBox ();
vbox.PackStart (new Label ("Expander demo. Click on the triangle for details."), false, true, 3);
Expander expander = new Expander ("Details");
expander.Add (new Label ("Details can be shown or hidden."));
vbox.PackStart (expander, false, true, 3);
this.Add (vbox);
this.ShowAll ();
}
void OnWindowDelete (object sender, DeleteEventArgs a)
{
Application.Quit ();
}
}
</code>
</example>
<para>
Special Usage
</para>
<para>
There there are situations in which you may prefer to show and hide the expanded widget yourself, such as when you want to actually create the widget at expansion time. In this case, create a <seecref="T:Gtk.Expander"/> but do not add a child to it. The expander widget has <seecref="E:Gtk.Expander.Activated"/> which can be used to monitor its expansion state.
</para>
<example>
<codelang="C#">
using System;
using Gtk;
class DemoExpander : Gtk.Window
{
static void Main ()
{
Application.Init ();
new DemoExpander ();
Application.Run ();
}
DemoExpander () : base ("Demo Expander")
{
this.BorderWidth = 10;
this.DeleteEvent += new DeleteEventHandler (OnWindowDelete);
VBox vbox = new VBox ();
vbox.PackStart (new Label ("Expander demo. Click on the triangle for details."), false, true, 3);
Expander expander = new Expander ("Details");
expander.Activated += new EventHandler (OnExpanded);
vbox.PackStart (expander, false, true, 3);
this.Add (vbox);
this.ShowAll ();
}
void OnExpanded (object sender, EventArgs a)
{
Expander expander = sender as Expander;
if (expander.Child == null)
{
expander.Add (new Label ("Details can be shown or hidden."));
expander.ShowAll ();
}
}
void OnWindowDelete (object sender, DeleteEventArgs a)
