Reading in a Movie Cube

This is a "progress" widget displayed only while the
program is reading a series of files to load a movie
cube. It will go away when the loading is finished.
This could take a while and other widget operations
are deactivated in the meantime (a click on another will
just cause a beep). If you want to abort the loading
process, just hit the stop button. The cube up to that
point will be available so you can also use stop for a
partial load (after you found out it was taking longer
than you wanted for the full load for example).

The dismiss button on this widget can be used to get rid
of it in case something goes wrong. Dismissing causes the
widget to be unmanaged and the modality goes away. If you
dismiss while reading in a cube, you could in principle
use other widgets. But you might generate strange internal
errors this way. Try it if you like baffling excitement.