It would be very useful to add a Image to the Slideshow that isn't a real file. Because we use many pictures stored in databases. A workaround is to attach it myself, but some things (like the text property) doesn't work correctly. My workaround is:
begin
image := dvSmthSldShw.Items.Add;
image.Image.LoadFromStream(Stream);
....
but it would be good if this is works or another function is implemented to a "clean" load a picture from a stream.