ByteScout PDF SDK - C# - Set Blend Mode for Drawing in PDF - ByteScout

ByteScout PDF SDK – C# – Set Blend Mode for Drawing in PDF

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How to set blend mode for drawing in PDF in C# using ByteScout PDF SDK

The tutorial below will demonstrate how to set blend mode for drawing in PDF in C#

Source code documentation samples provide quick and easy way to add a required functionality into your application. ByteScout PDF SDK can set blend mode for drawing in PDF. It can be used from C#. ByteScout PDF SDK is the component to help programmers in generating new pdf files, modifying and updating existing pdf documents or pdf forms. Provides support for auto-filling pdf forms, adding text with adjustable font, style, size, font family, new form fields, vector and raster drawings.

This code snippet below for ByteScout PDF SDK works best when you need to quickly set blend mode for drawing in PDF in your C# application. Just copy and paste the code into your C# application’s code and follow the instruction. Code testing will allow the function to be tested and work properly with your data.

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Program.cs
      
using System.Diagnostics; using Bytescout.PDF; namespace BlendModeExample { /// <summary> /// This example demonstrates how to use blend modes - a way how /// intersecting semi-transparent objects will blend on page canvas. /// </summary> class Program { static void Main() { // Create new document Document pdfDocument = new Document(); pdfDocument.RegistrationName = "demo"; pdfDocument.RegistrationKey = "demo"; // Add page Page page = new Page(PaperFormat.A4); pdfDocument.Pages.Add(page); Canvas canvas = page.Canvas; // Create transparent brushes SolidBrush brushRed = new SolidBrush(new ColorRGB(255, 0, 0)); brushRed.Opacity = 50; SolidBrush brushGreen = new SolidBrush(new ColorRGB(0, 255, 0)); brushGreen.Opacity = 50; SolidBrush brushBlue = new SolidBrush(new ColorRGB(0, 0, 255)); brushBlue.Opacity = 50; // Normal blending canvas.BlendMode = BlendMode.Normal; canvas.DrawCircle(brushRed, 100, 100, 50); canvas.DrawCircle(brushGreen, 100, 150, 50); canvas.DrawCircle(brushBlue, 150, 100, 50); // Darken blending canvas.BlendMode = BlendMode.Darken; canvas.DrawCircle(brushRed, 300, 100, 50); canvas.DrawCircle(brushGreen, 300, 150, 50); canvas.DrawCircle(brushBlue, 350, 100, 50); // Lighten blending canvas.BlendMode = BlendMode.Lighten; canvas.DrawCircle(brushRed, 100, 300, 50); canvas.DrawCircle(brushGreen, 100, 350, 50); canvas.DrawCircle(brushBlue, 150, 300, 50); // Color burn blending canvas.BlendMode = BlendMode.ColorBurn; canvas.DrawCircle(brushRed, 300, 300, 50); canvas.DrawCircle(brushGreen, 300, 350, 50); canvas.DrawCircle(brushBlue, 350, 300, 50); // Save document to file pdfDocument.Save("result.pdf"); // Cleanup pdfDocument.Dispose(); // Open result document in default associated application (for demo purpose) ProcessStartInfo processStartInfo = new ProcessStartInfo("result.pdf"); processStartInfo.UseShellExecute = true; Process.Start(processStartInfo); } } }

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