Intelligent Screen Saver

namespace dshow.Core
{
	using System;
	using System.Runtime.InteropServices;

	// IPropertyBag
	//
	// The IPropertyBag interface provides an object with a property
	// bag in which the object can persistently save its properties
	//
	[ComImport,
	Guid("55272A00-42CB-11CE-8135-00AA004BB851"),
	InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
	internal interface IPropertyBag
	{
		// Asks the property bag to read the named property
		[PreserveSig]
		int Read(
			[In, MarshalAs(UnmanagedType.LPWStr)] string pszPropName,
			[In, Out, MarshalAs(UnmanagedType.Struct)] ref object pVar,
			[In] IntPtr pErrorLog);

		// Asks the property bag to save the named property
		[PreserveSig]
		int Write(
			[In, MarshalAs(UnmanagedType.LPWStr)] string pszPropName,
			[In, MarshalAs(UnmanagedType.Struct)] ref object pVar);
	}
}