Error With My Code :( Please Help!

function systemchooser()
term.clear()
sleep(1)
while true do
term.clear()
term.setBackgroundColor(colors.cyan)
term.clear()
paintutils.drawLine(1, 1, displayX, 1, colors.lightBlue)
term.setBackgroundColor(colors.lightBlue)
term.setTextColor(colors.black)
term.setCursorPos(46, 1)
print("Build version "..build)
term.setBackgroundColor(colors.lightBlue)
term.setTextColor(colors.black)
term.setCursorPos(1,1)
print("System Chooser")
term.setBackgroundColor(colors.lightBlue)
term.setTextColor(colors.black)
term.setCursorPos(1, 3)
print("Restart PC")
term.setBackgroundColor(colors.lightBlue)
term.setTextColor(colors.black)
term.setCursorPos(1,4)
print("Shutdown PC")
term.setBackgroundColor(colors.lightBlue)
term.setTextColor(colors.black)
term.setCursorPos(1,5)
print("[Exit]")
local event, button, X, Y = os.pullEvent("mouse_click")
if event == "mouse_click" then
if X >= 1 and X <= 20 and Y == 3 and button == 1 then
  term.clear()
  term.setBackgroundColor(colors.black)
  term.clear()
  term.setTextColor(colors.white)
  print("Armian OS version 7.1")
  print(" ")
  print(" ")
  print("System will restart! Saving your work!")
  sleep(1.5)
  os.reboot()
elseif X >= 1 and X <= 19 and Y == 4 and button == 1 then
  term.clear()
  term.setBackgroundColor(colors.black)
  term.clear()
  term.setTextColor(colors.white)
  print("Armian OS version 7.1")
  print(" ")
  print(" ")
  print("System will shutdown! Saving your work!")
  sleep(1.5)
  os.shutdown()
elseif X >= 1 and X <= 18 and Y == 5 and button == 1 then
  break
end
end
end
end
build = "7.1"
osname = "Armian OS Lua Edition"
author = "Arman Ian Isaac A. Sapelino"
code_name = "Universal XII"
displayX, displayY = term.getSize()
term.clear()
sleep(0)
while true do
term.clear()
term.setBackgroundColor(colors.cyan)
term.clear()
paintutils.drawLine(1, 1, displayX, 1, colors.lightBlue)
term.setCursorPos(46,1)
print("Build version "..build)
term.setCursorPos(1,1)
print("[Armian OS]")
local event, button, X, Y = os.pullEvent("mouse_click")
if event == "mouse_click" then
  if X >= 1 and X <= 10 and Y == 1 and button == 1 then
	paintutils.drawLine(1, 1, 9, 1, colors.gray)
	paintutils.drawLine(1, 2, 15, 2, colors.gray)
	paintutils.drawLine(1, 3, 15, 3, colors.gray)
	paintutils.drawLine(1, 4, 15, 4, colors.gray)
	term.setCursorPos(1,1)
	print("[Armian OS]")
	print("[Applications]")
	print("Run")
	print("[System Chooser]")
b = false
local event, button, X, Y = os.pullEvent("mouse_click")
if event == "mouse_click" then
  if X >= 1 and X <= 6 then
	term.setBackgroundColor(colors.cyan)
	term.clear()
	paintutils.drawLine(1, 1, screenX, 1, colors.lightBlue)
	term.setCursorPos(1,1)
	term.setTextColor(colors.black)
  if Y == 2 then
	shell.run("/system/program.apx")
  elseif Y == 3 then
	print("Run")
	input = read()
	shell.run(input)
  elseif Y == 4 then
	systemchooser()
end
end
end
end
end
end

The error said: paintutils:45: bad argument: double expected, got nil

Line 94: screenX is never defined

LBPHacker, on 31 August 2013 - 10:08 AM said:

Line 94: screenX is never defined

I agree, he should change screenX to displayX and the program will work. I tested that and it did work afterwards.

Something to keep in mind when copying other peoples codes and trying to make it your own, if you decide to change variable names and function names make sure they are changed throughout the entire code structure to the new names.

wow thanks :D/>