using System;
using System.Runtime.InteropServices;


public class Widget
{
	IntPtr rawObject;
	
	public delegate void virtualMethod1Delegate();
	public delegate void virtualMethod2Delegate();
	virtualMethod1Delegate vm1Delegate;
	virtualMethod2Delegate vm2Delegate;
	
	[DllImport("libwidget", CharSet=CharSet.Ansi)]
	private static extern IntPtr new_WidgetBridge(
		[MarshalAs(UnmanagedType.FunctionPtr)] virtualMethod1Delegate d1,
		[MarshalAs(UnmanagedType.FunctionPtr)] virtualMethod2Delegate d2
		 );
	
		 
	public Widget()
	{
		vm1Delegate = new virtualMethod1Delegate( VirtualMethod1 );
		vm2Delegate = new virtualMethod2Delegate( VirtualMethod2 );
		rawObject = new_WidgetBridge( vm1Delegate, vm2Delegate );
	}	
	
	[DllImport("libwidget", CharSet=CharSet.Ansi)]
	private static extern void Widget_virtualMethod1(IntPtr instPointer);
	public virtual void VirtualMethod1()
	{
		Widget_virtualMethod1(rawObject);
	}
	
		
	[DllImport("libwidget", CharSet=CharSet.Ansi)]
	private static extern void Widget_virtualMethod2(IntPtr instPointer);
	public virtual void VirtualMethod2()
	{
		Widget_virtualMethod2(rawObject);
	}
	
	
	[DllImport("libwidget", CharSet=CharSet.Ansi)]
	private static extern void WidgetBridge_doSomething(IntPtr instPointer);
	public virtual void DoSomething()
	{
		WidgetBridge_doSomething(rawObject);
	}

	


	

}


public class CustomWidget: Widget
{
	public CustomWidget(): base() {}
	
	public override void VirtualMethod2()
	{
		Console.WriteLine("C# version of VirtualMethod2");
	}
}


public class Testing
{
	public static void Main()
	{
		Widget w = new CustomWidget();
		w.DoSomething();
		Environment.Exit(0);
	}
}