ExtractFilePageContentToStringA

Extraction, Page properties

Description

O sufixo A indica o ponto de entrada ANSI (char) da DLL; a superfície ActiveX/COM expõe apenas a forma Unicode. O comportamento é idêntico ao de ExtractFilePageContentToString e os argumentos de cadeia de caracteres são interpretados com base na página de código atual definida por SetAnsiMode

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 DLExtractFilePageContentToStringA(InstanceID: Integer; InputFileName, Password: PAnsiChar; Page: Integer): PAnsiChar;

DLL

const char * DLExtractFilePageContentToStringA(int InstanceID, const char * InputFileName, const char * 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...