Error loop prevention?

[Markus Winter <markus_winter@online.de>]

Hi all,

I have some checkboxes which result in the execution of shell commands. Now
if for whatever reason the shell can¹t execute the command then an error
should be reported and the checkbox state set back to it¹s previous state.
To prevent the creation of an endless error loop I do it with the help of a
boolean property called ResetState

  if ResetState then  // otherwise an error will cause the code to run again
causing another error -> error loop trap
    
    ResetState = false
    
  else
    
    dim s as Shell = new Shell
    
    s.Mode = 0
    
    
    if me.Value then
      s.Execute "something"
    else
      s.Execute "something else"
    end if
    
    
    if s.errorCode <> 0 then  // didn't work
      MsgBox kErrorCode    // give an error
      ResetState = true
      me.Value = not me.Value  // reset checkbox
    end if
    
  end if

But this seems kind of inelegant. Is there a better way?

Thanks

Markus
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