pdfCreateArticleThread

int32_t __stdcall pdfCreateArticleThreadA(PPDF IPDF, const char* ThreadName);
int32_t __stdcall pdfCreateArticleThreadW(PPDF IPDF, const wchar_t* ThreadName);

function pdfCreateArticleThreadA(const IPDF: PPDF; const ThreadName: PAnsiChar): Integer; stdcall;
function pdfCreateArticleThreadW(const IPDF: PPDF; const ThreadName: PWideChar): Integer; stdcall;

Purpose. Create a new PDF article thread (/Threads — a legacy reading-order navigation mechanism linking text beads across pages).

Return value. The new thread's handle; 0 if IPDF is invalid.

C# (P/Invoke)

public static extern int pdfCreateArticleThreadA(IntPtr IPDF, [MarshalAs(UnmanagedType.LPStr)] string ThreadName);
public static extern int pdfCreateArticleThreadW(IntPtr IPDF, [MarshalAs(UnmanagedType.LPWStr)] string ThreadName);