pdfStrLen

int32_t __stdcall pdfStrLenA(const char* AStr);
int32_t __stdcall pdfStrLenW(const wchar_t* AStr);

function pdfStrLenA(const AStr: PAnsiChar): Integer; stdcall;
function pdfStrLenW(const AStr: PWideChar): Integer; stdcall;

Purpose. Null-terminated string length — a pure utility taking no IPDF parameter at all, unlike every other function in this chapter.

Description. A simple manual pointer-walk to the terminating null; no document state involved whatsoever. Provided purely for ABI/LumasPDF- convention completeness (callers in some language bindings may lack a native strlen/wcslen equivalent readily bound).

Parameters.

Return value. The string's length in characters (excluding the terminator); 0 if AStr is nil.

C# (P/Invoke)

public static extern int pdfStrLenA([MarshalAs(UnmanagedType.LPStr)] string AStr);
public static extern int pdfStrLenW([MarshalAs(UnmanagedType.LPWStr)] string AStr);