Hi Dai,
Please do search in scn forum before posting and read .The SCN Rules of Engagement
- Search before you post. There are many answered questions and helpful postings already in SCN. Before posting a new question, please search SCN to see if it’s already been asked / answered. That’s the fastest way to get your information.
Kindly go through below mentioned links for print a barcode in smartforms which had been answered already.
how to print barcode using smartform and sapscr... | SCN
How to print a barcode using ABAP | SCN
Step-by-step New Barcode Technology for Smart Forms - Code Gallery - SCN Wiki
Regards,
Vivek