What is the maximum length of the buffer which is to be passed to QueryWinL..

Hi..

I am trying to display some message.For that I am reading the text from a file of size 10kb and Reading that data into a buffer.
when I am trying to Display the text using iEikonEnv->QueryWinL() or InfoWinL()

It is not showing the complete text.It seems like it is showing 20 or 30 percent of the actual text. Can anybody tell me what is the maximum size of the buffer that will be passed to QueryWinL..

ThanX&Regards
vijay