This needs to be verified. IIRC backgroun of Qt widgets are controlled by other attributes. In additional isigraph is initialized with a white background.
glrgb remains unchanged. There is a new cmd glrgba, see http://www.jsoftware.com/jwiki/Guides/Window%20Driver/Command%20Reference see also qt demo gl2 for use of glrgba. Вс, 24 мар 2013, Henry Rich писал(а): > Questions: > > 0. Does this mean that isigraph windows are transparent? > 1. Is glrgb changed to take 4 values? > > Henry Rich > > On 3/24/2013 8:51 PM, bill lam wrote: > >The pixel color in gl2 has been changed form to rgb to argb > >format. glpixels and glqpixels assume the alpha value in the > >data. This means an integer 16bffffff will not display because > >it is totally transparent. Two utility verbs added > > > >alpha27 - add alpha component (value 255) > >alpha17 - discard alpha component > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
