Implementing block indent/unindent in Tmemo

I am trying to implemement a block indent/unindent routine in a Tmemo; so for eg, when pressing a hot key (say ctrl+U/I) the selected text moves left/right one tab space. Funny thing is that it works like so in a TRichedit:
procedure TForm1.ToolButton15Click(Sender: TObject);
if richedit1.Paragraph.FirstIndent>=10 then
richedit1.Paragraph.FirstIndent := richedit1.Paragraph.FirstIndent-10
But tying to get it to work in Tmemo is doggin me :(
Many thanks in adv,
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

a tmemo is not a trichedit
and has no paragraph-property

you have to insert some blanks or a tab
to each line at front to simulate an indent

meikl ;-)

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
Post your closing recommendations!  No comment means you don't care.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.