[plt-scheme] slideshow, sound

At Mon, 3 Mar 2008 07:04:03 -0700, Richard Cleis wrote:
> > I think Slideshow will have to provide a new hook --- or some general
> > API to mediate the slide content and the slide viewer --- to make that
> > work.
> 
> What about Slide Show GUI's?  Many applications in a laboratory  
> require only elementary UI's, but they have so many features that a  
> user's manual is paradoxically required.  Furthermore, many  
> organizations are (for better or worse) driven by power point  
> slides.  I'd like to make Slide Show Presentations that fit that  
> paradigm (for better or worse), yet operators could stop on a slide  
> near relevant material and run the equipment.  A few years ago, I  
> 'discovered' the thunk button in Slideshow and sent a few messages  
> (over a socket) to run equipment.  That satisfied the geek in me, but  
> more interaction is required.

This much should already work fairly well with clickback picts, since
you can get access to the whole `scheme/gui' (i.e., MrEd) toolbox in
the callback function. In fact, the motivation behind an early version
of Slideshow was to enable a talk about MrEd, where I use MrEd
interactively during the talk.

The missing piece is being able to control and reflect on the state of
the viewer window that's showing the slides.

Matthew