gtk-sharp 0.0.0.0 neutral Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.

A container with just one child.

A Bin widget is a with just one child. It is used to create subclasses, since it provides common code needed for handling a single child . Many GTK+ widgets are subclasses of Bin, including , , , , and . To place a child widget inside this container, use the standard method. For the widget to be useful, it should participate in size negotiation and size allocation using the events and . Since Gtk.Bin is an abstract class in C, it is necessary to register a Type. Sample follows.


using System;
using Gtk;

//
// A simple Bin class: a simple container that adds padding.
//
class MyPadder : Bin {
	int pad = 50;
	static GLib.Type type;
	Widget child;
	
	static MyPadder ()
	{
	        //
	        // Register the type on the static constructor, so it is
		// available on the instance constructors
		//
		type = RegisterGType (typeof (MyPadder));
	}
	
	public MyPadder () : base (type)
	{
		// To track our child widget.
		Added += new AddedHandler (MyAdded);

		// Participate in size negotiation
		SizeRequested += new SizeRequestedHandler (OnSizeRequested);
		SizeAllocated += new SizeAllocatedHandler (OnSizeAllocated);
	}

	//
	// Invoked to query our size
	//
	void OnSizeRequested (object o, SizeRequestedArgs args)
	{
		if (child != null){
			int width = args.Requisition.width;
			int height = args.Requisition.height;
			
			child.GetSizeRequest (out width, out height);
			if (width == -1 || height == -1)
				width = height = 80;
			SetSizeRequest (width + pad * 2, height + pad * 2);
		} 
		
	}

	//
	// Invoked to propagate our size
	//
	void OnSizeAllocated (object o, SizeAllocatedArgs args)
	{
		if (child != null){
			Gdk.Rectangle mine = args.Allocation;
			Gdk.Rectangle his = mine;

			his.x += pad;
			his.y += pad;
			his.width -= pad * 2;
			his.height -= pad * 2;
			child.SizeAllocate (his);
		}
	}

	//
	// Public property of the Padding widget
	//
	public int Pad {
		get {
			return pad;
		}

		set {
			pad = value;
			QueueResize ();
		}
	}

	void MyAdded (object o, AddedArgs args)
	{
		child = args.Widget;
	}
}

class Y {
	static void Main ()
	{
		Application.Init ();

		Window w = new Window ("Hello");
		MyPadder x = new MyPadder ();
		x.Pad = 100;
		Button b = new Button ("Hola");
		w.Add (x);
		x.Add (b);

		w.ShowAll ();
		
		Application.Run ();
	}
}

Gtk.Container Atk.Implementor GLib.IWrapper GLib.IWrapper System.IDisposable Method System.Void

Disposes the resources associated with the object.

Constructor

Internal constructor

Pointer to the C object. An instance of Bin, wrapping the C object. This is an internal constructor, and should not be used by user code. Constructor

To be added

a To be added Property Gtk.Widget

To be added

a To be added Property GLib.GType

To be added

a To be added Constructor

To be added

a a To be added