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In this section we present example code to create a new PDF document containing text, graphic shapes and images with transparency applied. Before proceeding further please make sure that the prerequisite steps as listed in the Document Engines parent topic are followed.

 

Given below is the sample code.

 

// Create a new PDF document
using (var pdfDoc = new PDF())
{
   // Set the measurement unit to inches
   pdfDoc.MeasurementUnit = MeasurementUnit.Inches;
 
   var page = new PDFPage();
 
   // Sets alpha value for brush color
   page.Brush.Color = Color.FromARGB(30, Color.Blue);
   // Writes translucent text
   page.WriteText("This is transparent text", 1, 2.5f);
 
   // Changes alpha value for brush color
   page.Brush.Color = Color.FromARGB(40, Color.YellowGreen);
 
   // Draws a translucent ellipse
   var pen = new Pen(Color.Black);
   page.DrawEllipse(pen, new SimpleRect(x: 1, y: 3.5f, width: 2, height: 1), isFill: true, isStroke: true);
 
   // Changes alpha value of brush color again
   page.Brush.Color = Color.FromARGB(10, Color.Empty);
   
   // Draws a translucent image
   page.DrawImage(@"logo.png", new SimpleRect(1, 4.5f, 2, 1));
 
   // Add the page to the document
   pdfDoc.AddPage(page);
 
   // Save the document to file
   pdfDoc.Save("sample_doc.pdf");
 
   // Optional, since the using statement will automatically close the document
   pdfDoc.CloseDocument();
}