On Mon, Aug 9, 2010 at 10:55 AM, MacArthur, Ian (SELEX GALILEO, UK) <[email protected]> wrote: > >> But there's one essential difference: FLTK can't use GL drawing to >> do this directly, and thus all GL windows are "printed" by reading >> the screen pixels back (glReadPixels) and writing an image (bitmap) >> to the output device (or PS file). Thus, FLTK 1.3 won't work with >> hidden GL windows as well (unless I'm missing something). > > FWIW (which in this case will not be much...) prior to the 1.3 device > stuff being added, I did a lot of my "printing" type stuff by rendering > the GUI into offscreen buffers - these will generally respond to a > "redraw" even when they are hidden (since they are always "hidden" > anyway) and that allows some of the things the OP was asking about.
I was not aware of the possibility of using of-screen buffers in ftlk. How do you do it? Thanks, Shai _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
