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• 

  Helen Osetrova

  • July 23, 2018 13:49

  Hello!

  Please try to use methods of the imageModification object and the Modify method of the ImageDocument object as well. Take a look at the code sample below:

  for (int i = 0; i < document.Pages.Count; i++)
  {
    FREngine.LayoutBlocks blocks = document.Pages[i].Layout.Blocks;
    FREngine.ImageModification imageModification = engineLoader.Engine.CreateImageModification();
    FREngine.Region region = engineLoader.Engine.CreateRegion();
  
    for (int j = 0; j < blocks.Count; j++)
    {
        if (blocks[j].Type == FREngine.BlockTypeEnum.BT_Text)
        {
             FREngine.ITextBlock textBlock = blocks[j].GetAsTextBlock();
             FREngine.Paragraphs paragraphs = textBlock.Text.Paragraphs;
  
             foreach (FREngine.Paragraph par in paragraphs)
             {
                  region.AddRect(par.Left, par.Top, par.Right, par.Bottom);
                  imageModification.AddPaintRegion(region, 243 + 256 * 243 + 65536 * 21); // color = (red value) + (256 x green value) + (65536 x blue value)
                  imageModification.AddReplaceBlackPixelsRegion(region, 0, 0);
             }
  
              document.Pages[i].ImageDocument.Modify(imageModification);
         }  
     }
  
     document.Pages[i].Synthesize();
  }
  
  …
  
  document.Export(@"D:\Temp\Demo.pdf", FREngine.FileExportFormatEnum.FEF_PDF, null);

  Hope this information will be helpful!

  No 1 Yes
• 

  Permanently deleted user

  • July 26, 2018 12:41

  thank you, i got my result and its working perfect.

  No 0 Yes

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