Click above to get retro games delivered to your door ever month!

  Name:     ishandle() - see if a handle is available for opening
  Usage:    <logical> = ishandle()
  Params:   none
  Returns:  .T. if a handle is available, .F. if not

 ---------------------------------- Example ---------------------------------

                 if .not. ishandle()
                      @ 0,0 say "No more handles"
                 else
                      handle = fopen("test.txt")
                 endif