I did some changes to the Crystal demo, especialy when it works on XP (with the new futuristic background),
and the same change also apply to the VISTA version.
By the way, are you aware that you can move the sprites around with the mouse while in pause mode.
GDImage knows at any time which object has the focus, and which one is hover by the mouse.
You can also select several objects altogether, holding down the left CTRL key while you select the object with left mouse, once done you can drag the selection to another location, or retrieve the selection to do what ever you want with it.
Version 4.00 is able to manipulate 1024 objects per control.
The new Crystal version is attached to this message.