The files used in this walkthrough can be downloaded here: OrderForm.docand OrderForm.pdf.
Launch Microsoft Word. Type necessary texts. Choose CenoPDF > Add Combo Box. Click the Options tab. Type Motherboard in the Item box and 80.00 in the Export Value box. Click the Add button. This defines the price of the motherboard is $80.
Add more items into above box:
Pentium 4 => 100.00; AMD CPU => 90.00; CD-ROM => 20.00; Keyboard => 10.00; Mouse => 12.00
Follow the same way as above, choose CenoPDF> Add List Box to add a list box named shipping and add a few items to it.
Add a text box named total and make it read-only.
getField("total").value = getField("computerparts").value + getField("shipping").value;
The final document looks like this:
Choose CenoPDF > Export to PDF to generate the final PDF file and open it in Adobe Reader.