nxgl Redrawing

[Dave Marples]

Folks,

I've implemented an ePaper driver under nxgl, but as some of you are 
probably aware there needs to be an explicit redraw request to update an 
ePaper display.

I'm not quite sure how to do that under nxgl as normally it would be 
driven automatically. It also takes a fair bit of time (~14 seconds for 
a colour display) during which period access to the ePaper is 'locked 
out' so the application really does need to be aware of what is going on.

My intention is to add an nx_updatedisplay() API...but is there a 
better, or already available, way to do this? It could be done via a 
call to nx_setvisibility on the background window I guess, but 
personally I don't like overlaid semantics like that...

Regards

DAVE