There has been a problem with reading pixels using this trap for ever or at least since display modes became richer. I asked about it in this group a year or two back but this attracted no interest at the time. I was trying to write a flood facility into my CAD program but ended up having to read pixels from the screen in my code - is this something that should be done in atomic mode so all is done and dusted before another program intervenes? Anyway, I found out the hard way that the code has to allow for different display modes!
Christopher Cave _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
