##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: October, 2016
# Modified: 2017-01-09/02:53-0500
##+
#
# WSync.icn, demonstrate window buffer sync
#
procedure main()
    w := open("WSync", "g", "size=40,40", "canvas=hidden")

    Fg(w, "vivid orange")
    DrawCircle(w, 20, 20, 18)
    WSync()

    Fg(w, "blue")
    DrawCircle(w, 20, 20, 9, 0.0, &pi)
    # sync windowing system and discard all pending events
    WSync(w, "yes")

    # save image for the document
    WriteImage(w, "../images/WSync.png")
    close(w)
end