ExtractFilePageContentToString

Extraction, Page properties

Description

Extracts the raw content stream of a specified page from an external PDF file and returns it as a string. This function uses the direct access backend, avoiding loading the entire document into memory, which is ideal for large files.

Syntax

Delphi

Function TPDFlib.ExtractFilePageContentToString(Const InputFileName, Password: WideString; Page: Integer): AnsiString;

ActiveX

Function PDFlib::ExtractFilePageContentToString(InputFileName As String, Password As String, Page As Long) As String

DLL

const char * DLExtractFilePageContentToString(int InstanceID, const wchar_t * InputFileName, const wchar_t * Password, int Page);

Parameters

InputFileName	The path to the source PDF file.
Password	The password to open the file. Pass an empty string if the file is not protected.
Page	The page number to extract (1-based).

Return values

Empty string	Failed to open file, invalid page, or extraction error.
Content string	The raw PDF content stream of the page.

Remarks

The returned string contains raw PDF page description instructions (such as drawing, text positioning operators). To extract human-readable text instead, use ExtractFilePageText.

Example

var Content: AnsiString;
Content := PDF.ExtractFilePageContentToString('sample.pdf', '', 1);
if Content <> '' then
  // Process the content instructions...