Justificando texto

Function Justifica(mCad:string;mMAx:integer):string;
var
mPos,mPont,mTam,mNr,mCont:integer;
mStr:string;
begin
mTam:=Length(mCad);
if mTam>=mMax then
Result:=copy(mCad,1,mMax)
else
mStr:='';
mCont:=0;
mPont:=1;
mNr:=mMax-mTam;
while mContbegin
mPos:=pos(mStr,copy(mCad,mPont,100));
if mPos=0 then
begin
mStr:=mStr+' ';
mPont:=1;
continue;
end
else
begin
mCont:=mCont+1;
Insert(' ',mCad,mPos+mPont);
mPont:=mPont+mPos+length(mStr);
end;
Result:=mCad;
end;
end;

EX.:
Memo1.lines[i]:=(justifica(memo1.lines[i]{String},60 {Nº de caracteres possiveis da linha});