How to determine if a page of a PDF file has a text layer

Question

How to determine if a page of a PDF file has a text layer?

 

Answer

This can be done using the IFRDocument::CheckTextLayer method.

  • To check whether a specific page in a PDF file has a text layer, pass to the method an IntsCollection object containing only the index of that page.
  • Pass CTM_HasText as the value of the CheckingMode parameter to check whether a page has a text layer.
  • If a page has a text layer, call the method again passing CTM_ReliableText as the value of the CheckingMode parameter to check whether the page's text layer is reliable.

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