2003-11-28 Miguel de Icaza <miguel@ximian.com>

2003-11-28  Miguel de Icaza  <miguel@ximian.com>

	* Mono.Cairo/Object.cs:

	* Mono.Cairo/Surface.cs (LookupSurface): New method, it took me a
	while to find out why Cairo applications would crash sometimes.
	The problem was that Cairo.Object:TargetSurface get property would
	create a Surface from an IntPtr, leading to having two managed
	objects owning the same unmanaged Surface.

	(Surface..ctor): Make private, so only this module can create
	surfaces.

	(Surface.Dispose): Add disposable pattern, finalizer.

	* Mono.Cairo/Object.cs: Add disposable pattern, finalizer.

svn path=/trunk/mcs/; revision=20606