GtkSharp/doc/en/Gtk/OptionMenu.xml

<Type Name="OptionMenu" FullName="Gtk.OptionMenu">
  <TypeSignature Language="C#" Value="public class OptionMenu : Gtk.Button, Implementor, IWrapper, IWrapper, IDisposable" Maintainer="John Luke" />
  <AssemblyInfo>
    <AssemblyName>gtk-sharp</AssemblyName>
    <AssemblyVersion>0.0.0.0</AssemblyVersion>
    <Attributes />
  </AssemblyInfo>
  <ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <link location="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
  <Docs>
    <summary>A widget used to choose from a list of valid choices.</summary>
    <remarks>
	  <para>
		A <see cref="T:Gtk.OptionMenu"/> is a widget that allows the user to choose from a list of valid choices.
		The <see cref="T:Gtk.OptionMenu"/> displays the selected choice.
		When activated the <see cref="T:Gtk.OptionMenu"/> displays a popup <see cref="T:Gtk.Menu"/> which allows the user to make a new choice.    
	  </para>
	  <para>
	    Using a <see cref="T:Gtk.OptionMenu"/> is simple; build a <see cref="T:Gtk.Menu"/>, by calling <see cref="C:Gtk.Menu()"/>, then appending <see cref="T:Gtk.MenuItem"/>s to it with <see cref="M:Gtk.MenuShell.Append()"/>.
		Set that menu on the <see cref="T:Gtk.OptionMenu"/> with <see cref="P:Gtk.OptionMenu.Menu"/>.
		Set the selected <see cref="T:Gtk.MenuItem"/> with <see cref="M:Gtk.OptionMenu.SetHistory(System.UInt32)"/>; connect to the event <see cref="E:Gtk.OptionMenu.Changed"/>; when the <see cref="E:Gtk.OptionMenu.Changed"/> event occurs, check the new selected <see cref="T:Gtk.MenuItem"/> with <see cref="P:Gtk.OptionMenu.History"/>.
	  </para>
	</remarks>
	<example>
	  <code language="C#">
using System;
using Gtk;
using GtkSharp;

class OptionMenuSample
{
	OptionMenu opt;
	
	static void Main ()
	{
		new OptionMenuSample ();
	}
	
	OptionMenuSample ()
	{
		Application.Init ();
		
		Window win = new Window ("OptionMenuSample");
		win.DeleteEvent += new DeleteEventHandler (OnWinDelete);
		
		// set up the OptionMenu
		opt = new OptionMenu ();
		opt.Changed += new EventHandler (OnOptionChanged);
		Menu m = new Menu ();
		MenuItem miOne = new MenuItem ("One");
		m.Append (miOne);
		MenuItem miTwo = new MenuItem ("Two");
		m.Append (miTwo);
		MenuItem miThree = new MenuItem ("Three");
		m.Append (miThree);
		
		// add children widgets to their parents
		opt.Menu = m;
		win.Add (opt);
		
		
		// set the OptionMenu to a value
		opt.SetHistory (2);
		
		win.ShowAll ();
		
		Application.Run ();
	}
	
	void OnOptionChanged (object o, EventArgs args)
	{
		Console.WriteLine (opt.History);
	}
	
	void OnWinDelete (object o, DeleteEventArgs args)
	{
		Application.Quit ();
	}
}
	  </code>
	</example>
  </Docs>
  <Base>
    <BaseTypeName>Gtk.Button</BaseTypeName>
  </Base>
  <Interfaces>
    <Interface>
      <InterfaceName>Atk.Implementor</InterfaceName>
    </Interface>
    <Interface>
      <InterfaceName>GLib.IWrapper</InterfaceName>
    </Interface>
    <Interface>
      <InterfaceName>GLib.IWrapper</InterfaceName>
    </Interface>
    <Interface>
      <InterfaceName>System.IDisposable</InterfaceName>
    </Interface>
  </Interfaces>
  <Attributes />
  <Members>
    <Member MemberName="RemoveMenu">
      <MemberSignature Language="C#" Value="public void RemoveMenu ();" />
      <MemberType>Method</MemberType>
      <ReturnValue>
        <ReturnType>System.Void</ReturnType>
      </ReturnValue>
      <Parameters />
      <Docs>
        <summary>Removes the menu from the <see cref="T:Gtk.OptionMenu"/>.</summary>
        <remarks />
      </Docs>
    </Member>
    <Member MemberName="Finalize">
      <MemberSignature Language="C#" Value="protected virtual void Finalize ();" />
      <MemberType>Method</MemberType>
      <ReturnValue>
        <ReturnType>System.Void</ReturnType>
      </ReturnValue>
      <Parameters />
      <Docs>
        <summary>Disposes the resources associated with the object.</summary>
        <remarks />
      </Docs>
    </Member>
    <Member MemberName=".ctor">
      <MemberSignature Language="C#" Value="public OptionMenu (IntPtr raw);" />
      <MemberType>Constructor</MemberType>
      <ReturnValue />
      <Parameters>
		<Parameter Name="raw" Type="System.IntPtr" />
	</Parameters>
      <Docs>
        <summary>Internal constructor</summary>
        <param name="raw">Pointer to the C object.</param>
        <returns>An instance of <see cref="T:Gtk.OptionMenu"/>, wrapping the C object.</returns>
        <remarks>
          <para>This is an internal constructor, and should not be used by user code.</para>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName=".ctor">
      <MemberSignature Language="C#" Value="public OptionMenu ();" />
      <MemberType>Constructor</MemberType>
      <ReturnValue />
      <Parameters />
      <Docs>
        <summary>Creates a new <see cref="T:Gtk.OptionMenu"/></summary>
        <returns>an object of type <see cref="T:Gtk.OptionMenu"/></returns>
        <remarks>This is the default constructor for <see cref="T:Gtk.OptionMenu"/></remarks>
      </Docs>
    </Member>
    <Member MemberName="GType">
      <MemberSignature Language="C#" Value="public static uint GType { get; };" />
      <MemberType>Property</MemberType>
      <ReturnValue>
        <ReturnType>System.UInt32</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>The <see cref="T:GLib.Type"/> for <see cref="T:Gtk.OptionMenu"/></summary>
        <returns>The <see cref="T:GLib.Type"/> for the <see cref="T:Gtk.OptionMenu"/> class.</returns>
        <remarks />
      </Docs>
    </Member>
    <Member MemberName="History">
      <MemberSignature Language="C#" Value="public int History { get; };" />
      <MemberType>Property</MemberType>
      <ReturnValue>
        <ReturnType>System.Int32</ReturnType>
      </ReturnValue>
      <Docs>
        <summary>Retrieves the index of the currently selected <see cref="T:Gtk.MenuItem"/>.</summary>
        <returns>an object of type <see cref="T:System.Int32"/></returns>
        <remarks>The <see cref="T:Gtk.MenuItem"/>s are numbered from top to bottom, starting with 0.</remarks>
      </Docs>
    </Member>
    <Member MemberName="Menu">
      <MemberSignature Language="C#" Value="public Gtk.Widget Menu { set; get; };" />
      <MemberType>Property</MemberType>
      <ReturnValue>
        <ReturnType>Gtk.Widget</ReturnType>
      </ReturnValue>
      <Parameters>
	</Parameters>
      <Docs>
        <summary>The menu of options.</summary>
        <param name="value">an object of type <see cref="T:Gtk.Widget"/></param>
        <returns>an object of type <see cref="T:Gtk.Widget"/></returns>
        <remarks />
      </Docs>
    </Member>
    <Member MemberName="Changed">
      <MemberSignature Language="C#" Value="public event EventHandler Changed;" />
      <MemberType>Event</MemberType>
      <ReturnValue><ReturnType>System.EventHandler</ReturnType></ReturnValue>
      <Parameters />
      <Docs>
        <summary>Emitted when the <see cref="T:Gtk.OptionMenu"/> selection is changed.</summary>
        <remarks />
      </Docs>
    </Member>
    <Member MemberName=".ctor">
      <MemberSignature Language="C#" Value="protected OptionMenu (GLib.Type gtype);" />
      <MemberType>Constructor</MemberType>
      <ReturnValue />
      <Parameters>
		<Parameter Name="gtype" Type="GLib.Type" />
	</Parameters>
      <Docs>
        <summary>Internal constructor</summary>
        <param name="gtype">GLib type for the type</param>
        <returns>Creates a new instance of OptionMenu, using the GLib-provided type</returns>
        <remarks>
          <para>This is a constructor used by derivative types of <see cref="T:Gtk.OptionMenu" /> that would have their own GLib type assigned to it.  This is not typically used by C# code.</para>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="SetHistory">
      <MemberSignature Language="C#" Value="public void SetHistory (uint index_);" />
      <MemberType>Method</MemberType>
      <ReturnValue>
        <ReturnType>System.Void</ReturnType>
      </ReturnValue>
      <Parameters>
		<Parameter Name="index_" Type="System.UInt32" />
	</Parameters>
      <Docs>
        <summary>Selects the menu item specified by <paramref name="index_"/> making it the newly selected value for the <see cref="T:Gtk.OptionMenu" />.</summary>
        <param name="index_">a <see cref="T:System.UInt32" /></param>
        <remarks />
      </Docs>
    </Member>
  </Members>
</Type>