How to get call stack for last exception

// See also: http://pastebin.com/46QkwZNi - "how to convert call stack to text"
// See also: http://pastebin.com/rdNbEwPH - "how to get call stack on demand"
// See also: http://pastebin.com/ACtr0r6S - "how to silently log exception"
// See also: http://pastebin.com/sBn3PA1r - "how to create hang/deadlock report on demand"

// Option 1:

except
  on E: Exception do
    Memo1.Lines.Text := E.StackTrace;
end;

// Option 2:

uses
  EExceptionManager,
  EException;

var
  EI: TEurekaExceptionInfo;
begin
  EI := ExceptionManager.LastThreadException;
  if Assigned(EI) then // EI would be nil, if EurekaLog is disabled or event handlers instruct EurekaLog to skip this exception
    Memo1.Lines.Text := EI.CallStack.ToString;
end;

// Option 3:

uses
  EExceptionManager,
  EException;

var
  EI: TEurekaExceptionInfo;
// ...
  except
    on E: Exception do
    begin
      EI := ExceptionManager.Info(E);
      if Assigned(EI) then // EI would be nil, if EurekaLog is disabled or event handlers instruct EurekaLog to skip this exception
        Memo1.Lines.Assign(EI.CallStack);
    end;
  end;