I have problems with arabic characters in pdfs when printing invoices the problem seem to relate to the pdf lib of zend so i decide to use tcpdf
now most blogs about this just explain the steps to but tcpdf at your lib and call it from your code
but i don’t know where to call it and use it to create my custom pdf then output the pdf
i tried to call it from the get Pdf function from this file
app/code/core/Mage/Sales/Model/Order/Pdf/Invoice.php
but i didn’t work, it gives me an error says something is already outputed
where should i use the tcpdf lib and disable the functionality of the default pdf zend lib?
thanks