4 replies to this topic

[ebernerd]

So, I am developing an OS with WolfNinja2, and I was wondering how FireWolf's crash screen worked, where it was put into a nice setup.

Could anyone help, just kinda list the basic functions needed?

I would like to make a Windows 8 Style blue screen. The big ""

Thanks in advance.
-deadmau5

[jay5476]

it uses pcall (protected call) and then displays it in a custom error format eg.

suc,err = pcall(print(var)) if not suc then print(err) end

that will show the error attempt to call number

[ebernerd]

jay5476, on 08 September 2013 - 12:43 AM, said:

it uses pcall (protected call) and then displays it in a custom error format eg.

suc,err = pcall(print(var)) if not suc then print(err) end

that will show the error attempt to call number

And how do I implement this into a program? When do I use it?

[jay5476]

say in firewolf you acsess a site it sends you the code you do

suc, err = pcall(code)
if not suc then
print(err) -- or do stuff with the information
end

[theoriginalbit]

Have a read of my tutorial.

it should also be noted on top of jay5476's code that you should do the following

local ok, err = pcall(shell.run, "someProgram")
if not ok and err ~= "Terminated" then
  print(err)
end

That way you're handling errors of a program, and also making sure you don't show the error screen if they terminated the program.