`pdfSetUserUnit`

Set/get the page's /UserUnit catalog entry — a multiplier

float __stdcall pdfGetUserUnit(PPDF IPDF);
BOOL32 __stdcall pdfSetUserUnit(PPDF IPDF, float Value);

Delphi

function pdfGetUserUnit(const IPDF: PPDF): Single; stdcall;
function pdfSetUserUnit(const IPDF: PPDF; Value: Single): LongBool; stdcall;

Purpose. Set/get the page's /UserUnit catalog entry — a multiplier scaling the default 1/72 inch PDF unit for oversized pages (e.g. engineering drawings exceeding the PDF spec's ordinary maximum page size).

Return value. Getter: the current multiplier; 0.0 if IPDF invalid. Setter: True if IPDF valid.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Core SDK