The GoF describe the intent of the Memento as follows:

Without violating encapsulation, capture and externalize an object’s internal state so that the object can be restored to this state later.

Given that intent, it would seem that you could provide a permanent storage of a graphic state. Since my interests are in video (as shown in the example!) I would be very interested in storing a point in the video where a user could close it and come back and resume it later. For me, it would simply be a matter of getting a point in the video and saving it to disk (probably using FMS persistent shared object), but I’m not familiar enough with what you’re doing with graphics to know how you’d go about doing the same thing.

By the way when looking around for a suitable answer to your query, I ran across a book by Christopher Lasater, Design Patterns. I liked his description of the Memento, and you might find it useful as well. You can download it free here. The examples are in C#, but you might be able to find some useful material there. Also, if you do create a Memento for your graphic storage, perhaps you’d let us post it here as an example our readers would like.

Kindest regards,
Bill

Is that correct?

Thanks
flashDuniya.com

Sorry about that. For some reason the last (Part IV) slide either doubles up or won’t leave. I was going to wait until I could fix it and the put it up in the zip file. However, I’ve been pretty swamped; so I just corrected the URL to the zip file, and as soon as I can fix it I will.

Bill