Debenu Quick PDF Library 9 Developer Guide

PDF Forms
An interactive form -- sometimes referred to as an AcroForm -- is a collection of fields for
gathering information interactively from the user. A PDF document may contain any number of
fields appearing on any combination of pages, all of which make up a single, global interactive
form spanning the entire document.
Debenu Quick PDF Library provides fully support for working with form fields in PDF files, from
adding new form fields to retrieving data from form fields to updating existing form fields with
new data.
Form Field Types
PDF forms support the following field types:
● Button fields represent interactive controls on the screen that the user can manipulate
with the mouse. They include pushbuttons, check boxes, and radio buttons.
● Text fields are boxes or spaces in which the user can enter text from the keyboard.
● Choice fields contain several text items, at most one of which may be selected as the
field value. They include scrollable list boxes and combo boxes.
● Signature fields represent digital signatures and optional data for authenticating the
name of the signer and the document’s contents.
The GetFormFieldType function can be used to determine which form field type your fields are.
Create a new simple PDF form
Debenu Quick PDF Library lets you create new PDF forms from scratch. In this example we’ll
create four new text form fields with varying characteristics.
/* Create a PDF form */
// Tell the library that all co-ordinates should
// begin from the top left corner of the page.
QP.SetOrigin(1);
// Add the first new form field
var iDf1 = QP.NewFormField("First Name", 1);
QP.SetFormFieldValue(iDf1, "Jane");
QP.SetNeedAppearances(1);
QP.SetFormFieldBounds(iDf1, 20, 20, 100, 20);
QP.SetFormFieldAlignment(iDf1, 2);
// Add the second new form field
var iDf2 = QP.NewFormField("Second Name", 1);
QP.SetFormFieldValue(iDf2, "Doe");
QP.SetNeedAppearances(1);
QP.SetFormFieldBounds(iDf2, 20, 50, 100, 20);
fID = QP.AddTrueTypeFont("Myriad Pro Cond", 1);
ffID = QP.AddFormFont(fID);
QP.SetFormFieldFont(iDf2, ffID);
// Add the third new form field
var iDf3 = QP.NewFormField("Age", 1);
QP.SetFormFieldValue(iDf3, "31");