Good morning,
I'm trying to override the default page targeting in the PdfPage.AddDocumentLink, where it doesn't change the page display to the top of the page. I found the following on a really old post:
["null null" tells Adobe Reader not to change the display of the current page. You can try "null 0" or "null 841" (for DIN A 4) instead of "null null". Or replace "/XYZ null null 0" with "/FitB" to have Reader display the complete page.]
My question would be if I want to modify the targeting within my application's code (not by modifying the line in the PdfLinkAnnotation.cs file), is that possible?
I have two current test cases:
Case A (Build a link manually):
// targetPage = PdfPage object
// pdfRefBox = PdfRectangle object
PdfLinkAnnotation refLink = new PdfLinkAnnotation();
refLink.Elements["/Type"] = new PdfLiteral("/Annot");
refLink.Elements["/Subtype"] = new PdfLiteral("/Link");
refLink.Elements["/Rect"] = new PdfLiteral(pdfRefBox.ToString());
refLink.Elements["/M"] = new PdfLiteral("D:" + DateTime.Now.ToString("yyyyMMddhhmmss") + "-06'00'");
refLink.Elements["/NM"] = new PdfLiteral("(" + Guid.NewGuid().ToString().ToLower() + ")");
refLink.Elements["/BS"] = new PdfLiteral("[0 0 0]");*/
PdfPage linkPage = targetPage.Owner.Pages[6];
refLink.Elements["/Dest"] = new PdfLiteral("[{0} 0 R/XYZ null 0 0]", linkPage.Internals.ObjectNumber);
targetPage.Annotations.Add(refLink);
// refLink.ToString() = << /BS [0 0 0] /Dest [102 0 R/XYZ null 0 0] /M D:20180207103135-06'00' /NM (b46394f3-fa1c-440e-a217-19bf1fa672ff) /Rect [97.2 202.32 214.56 210.24] /Subtype /Link /Type /Annot >>
Case B (use the AddDocumentLink function):
// targetPage = PdfPage object
// pdfRefBox = PdfRectangle object
PdfLinkAnnotation refLink = targetPage.AddDocumentLink(pdfRefBox, 6);
PdfPage linkPage = targetPage.Owner.Pages[6];
refLink.Elements["/Dest"] = new PdfLiteral("[{0} 0 R/XYZ null 0 0]", linkPage.Internals.ObjectNumber);
// refLink.ToString() = << /Dest [102 0 R/XYZ null 0 0] /M D:20180207110436-06'00' /NM (937cdbac-1398-42bb-a081-e596017bbba9) /Rect [97.2 202.32 214.56 210.24] /Subtype /Link /Type /Annot >>
Case A doesn't work at all, while case B ignores the "null 0" command. Any thoughts - particularly on case B and getting it to change the targeting?
Thanks,
Dave
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PdfLinkAnnotation-CustomLinkDisplay.zip [5.16 KiB]