The documentation is designed to help you to implement the features on your side. ByteScout PDF SDK is the library for pdf documents generation, modification and updates. Can also generate and fill PDF forms. Provides support for text (fonts, style, size, font family), layers, pdf form fields, vector and raster drawings. It can be used to draw with transparency in PDF using VB.NET.
This code snippet below for ByteScout PDF SDK works best when you need to quickly draw with transparency in PDF in your VB.NET application. In order to implement the functionality, you should copy and paste this code for VB.NET below into your code editor with your app, compile and run your application. Enjoy writing a code with ready-to-use sample VB.NET codes.
Free trial version of ByteScout PDF SDK is available on our website. Documentation and source code samples are included.
Imports Bytescout.PDF ''' <summary> ''' This example demonstrates how to draw transparent objects. ''' </summary> Class Program Shared Sub Main() ' Create new document Dim pdfDocument = New Document() pdfDocument.RegistrationName = "demo" pdfDocument.RegistrationKey = "demo" ' Add page Dim page = New Page(PaperFormat.A4) pdfDocument.Pages.Add(page) Dim canvas = page.Canvas ' Prepare pens and brushes Dim borderPen = New SolidPen(New ColorRGB(0, 0, 0), 2.0F) Dim brush1 = New SolidBrush(New ColorRGB(255, 0, 0)) Dim brush2 = New SolidBrush(New ColorRGB(0, 0, 255)) borderPen.Opacity = 50 brush1.Opacity = 30 brush2.Opacity = 60 ' Draw normal rectangles canvas.DrawRectangle(brush1, 100, 100, 100, 100) canvas.DrawRectangle(borderPen, brush2, 150, 150, 100, 100) borderPen.Opacity = 80 brush1.Opacity = 60 brush2.Opacity = 30 ' Draw rounded rectangles canvas.DrawRoundedRectangle(brush1, 220, 100, 100, 100, 10) canvas.DrawRoundedRectangle(borderPen, brush2, 270, 150, 100, 100, 10) ' Save document to file pdfDocument.Save("result.pdf") ' Cleanup pdfDocument.Dispose() ' Open document in default PDF viewer app Process.Start("result.pdf") End Sub End Class