Documentation – Fill and inspect PDF forms in C++

Cpp: Exporting Form Data in C++

Fri, 13 Nov 2026 00:00:00 +0000

Export existing PDF form values to FDF, XFDF, or XML data files.

Form data export tutorials

Export to FDF - Export the bound form data to an FDF output stream.
Export to XFDF - Export the bound form data to an XFDF output stream.
Export to XML - Export the bound form data to an XML output stream.

Cpp: Importing Form Data in C++

Fri, 13 Nov 2026 00:00:00 +0000

Import FDF, XFDF, or XML values into an existing PDF form.

Form data import tutorials

Import FDF Data - Read FDF data from dataFile and import it into the bound form.
Import XFDF Data - Read XFDF data from dataFile and import it into the bound form.
Import XML Data - Read XML data from dataFile and import it into the bound form.

Cpp: Filling Form Fields in C++

Fri, 13 Nov 2026 00:00:00 +0000

Fill barcode, checkbox, list box, radio button, and text fields.

Form filling tutorials

Fill Text Fields - Fill name, address, and email with the sample contact details.
Fill Check Box Fields - Set subscribe_newsletter and accept_terms to the export value Yes.
Fill Radio Button Fields - Select option index 0 in the gender field.
Fill List Box - Set favorite_colors to Red.
Fill Barcode Fields - Set product_barcode to 123456789012.

Cpp: Button Fields and Images in C++

Mon, 09 Nov 2026 00:00:00 +0000

Use Form for this task. The examples below retain the original C++ code and API Reference steps.

Add image appearance to button field

Fill the Image1_af_image button image field from an image stream.

Create Form.
Bind the PDF input with Facade::BindPdf().
Set the field image appearance with Form::FillImageField().
Save the resulting PDF with Form::Save().

#include <Aspose.PDF.Cpp/Facades/Form.h>
#include <system/io/file.h>
#include <system/io/file_stream.h>
#include <system/string.h>

namespace Facades::Examples::PDF_Form
{
	using namespace System;
	using namespace Aspose::Pdf;
	using namespace Aspose::Pdf::Facades;
	using Form = Aspose::Pdf::Facades::Form;

	void AddImageAppearanceToButtonField(String inputFile, String imageFile, String outputFile)
	{
		auto form = MakeObject<Form>();
		auto imageStream = System::IO::File::OpenRead(imageFile);

		form->Facade::BindPdf(inputFile);
		form->FillImageField(u"Image1_af_image", imageStream);
		form->Save(outputFile);
	}
} // namespace Facades::Examples::PDF_Form

Cpp: Managing Form Fields in C++

Fri, 13 Nov 2026 00:00:00 +0000

Flatten form fields or rename existing fields.

Form field management tutorials

Flatten All Fields - Flatten all form fields into page content before saving the PDF.
Rename Form Fields - Rename First Name and Last Name to NewFirstName and NewLastName.

Cpp: Reading Form Values in C++

Fri, 13 Nov 2026 00:00:00 +0000

Enumerate form field names and read their current values.

Form value inspection tutorials

Get Field Values - Enumerate field names and print each field’s current value.