Can we have a progress bar that shows how many percent of a subStack have been loaded?

[Malte Brill]

Hi list,

I´m creating a really biggish stack (many Images, Sounds and stuff. About 35
MB when it is finished.) I´d like to have a progress bar in a splash screen
that indicates how many percent of the substack have been loaded into
memory.

Is that possible?

TIA,

Malte