Get Underline Annotations in PDF using C++

Get Underline annotation to PDF document programmaticaly using Aspose.PDF for C++ Library

C# Java C++ Python

In order to annotate PDF file, we’ll use Aspose.PDF for C++ API which is a feature-rich, powerful and easy to use document manipulation API for C++ platform. Open NuGet package manager, search for Aspose.PDF and install. You may also use the following command from the Package Manager Console.

Package Manager Console

PM > Install-Package Aspose.PDF.Cpp

Get Underline Annotation via C++

You need Aspose.PDF to try the code in your environment.

Load PDF in an instance of Document class
Create a new page or get a reference to an existing one
Create Underline annotation
Call method Add for Underline annotation from Page.Annotations collections
Save the file again

System Requirements

Aspose.PDF for C++ is supported on all major operating systems. Just make sure that you have the following prerequisites.

Microsoft Windows or a compatible OS with C++ Runtime Environment for Windows 32 bit, Windows 64 bit and Linux 64 bit.
Development environment like Microsoft Visual Studio.
Aspose.PDF for C++ DLL referenced in your project.

Get Underline Annotations from PDF - C++

Example


    // Load the PDF file
    Document document = new Document(System.IO.Path.Combine(_dataDir, "sample_Underline.pdf"));
    var UnderlineAnnotations = document.Pages[1].Annotations
        .Where(a => a.AnnotationType == AnnotationType.Underline)
        .Cast<UnderlineAnnotation>();
    foreach (var ca in UnderlineAnnotations)
    {
        Console.WriteLine($"{ca.Rect}");
    }