ATSUTextLayout associated with LMLTEPane

Hi,

I'm using an LMLTEPane in my PP app to display text.
I would like to set justification style to my lines of text.
For that the doc says to use the functions ATSUSetLineControls or
ATSUSetLayoutControls each one talking an ATSUTextLayout object as
first parameter.

The doc also says there always is an ATSUTextLayout associated with the
TXNObject of the LMLTEPane but how do you get this ATSUTextLayout?
I didn't find any Carbon function (or even LMLTEPane member) to get
this ATSUTextLayout...

Thanks in advance for your help.
Regards, Mac****ter.

P.S.: using CW 9.5 on OS X.3.5.