Filling a form field

If you have a form field on a PDF that is multilined, is there a way to tell if the string you are setting the value to be is greater than the viewable area? For example if you have a field that allows approx. 2000 characters but the value is much longer, is there a function that will return the portion that is not will not be viewable on the pdf when it is rendered? Obviously I can parse the string and figure this out, but on the chance there is functionality already there ...

Thanks

Chad

P.S. Thanks for the previous answer regarding merging PDFs

Hi Chad,

Thanks for the update.

We can do it by comparing the rectangle area of the text box and measureString value of the text entered.

Here is a sample for your reference.

formfill.zip

Please take a look into it and let me know if it helps.

Regards,
Dhivya.