Just a really really tiny calculator. Usage should (again) be obvious.

Just made as a joke, for fun. ;_)

on *LOAD: {
   echo -a ChibiCalc v1.0, by Knoeki
   echo -a Type /chibicalc to run, or use the menus.
}

dialog chibicalc {
  title "ChibiCalc"
  size -1 -1 56 68
  option dbu
  edit "", 1, 0 1 56 10, right
  button "7", 3, 1 12 12 12
  button "8", 4, 15 12 12 12
  button "9", 5, 29 12 12 12
  button "4", 6, 1 26 12 12
  button "5", 7, 15 26 12 12
  button "6", 8, 29 26 12 12
  button "1", 9, 1 40 12 12
  button "2", 10, 15 40 12 12
  button "3", 11, 29 40 12 12
  button "/", 12, 43 12 12 12
  button "*", 13, 43 26 12 12
  button "-", 14, 43 40 12 12
  button "+", 15, 43 54 12 12
  button "0", 16, 1 54 12 12
  button "Enter", 17, 15 54 26 12
}

alias chibicalc {
   if ($dialog(chibicalc) == $null) {
      dialog -m chibicalc chibicalc
   }
}

on *:DIALOG:chibicalc:sclick:3-16: {
   if (%chibicalc.clear == 1) {
      unset %chibicalc.clear
      did -r $dname 1
   }
   did -a $dname 1 $did($did).text
}

on *:DIALOG:chibicalc:sclick:17: {
   did -o $dname 1 1 $calc($did(1))
   set %chibicalc.clear 1
}

menu status,menubar,channel {
   .-
   .zOWB
   ..ChibiCalc:/chibicalc
}