>Can anyone has an idea how can we get start and end position of selection relative to line in multi line edit box. I have used selstart and sellength but it always give me the postion from the first line of editbox text.
>
>Thanks

You can count length of eac line in memo, and calculate the needed position:

function getrelativeselstart
lparameter nSelstart   && this is editbox.selstart property
nLines=memlines(memofield)
nLength=0
For n=1 to nLines
 if nLength+len(mline(memofield,n))+2>nSelstart
   return nSelstart-nLength
 endif  
 nLength=nLength+len(mline(memofield,n))+2  && allow 2 for chr(13)+chr(10)
Endfor

This is the idea. I did not test this code so check it carefully when implementing.