`pdfSetOrientation`

Set/get page rotation (/Rotate) — via explicit page

int32_t __stdcall pdfGetPageOrientation(IPGE PagePtr);
BOOL32 __stdcall pdfSetPageOrientation(PPDF IPDF, IPGE PagePtr, int32_t Value);
int32_t __stdcall pdfGetOrientation(PPDF IPDF);
BOOL32 __stdcall pdfSetOrientation(PPDF IPDF, int32_t Value);
BOOL32 __stdcall pdfSetOrientationEx(PPDF IPDF, int32_t Value);

Delphi

function pdfGetPageOrientation(PagePtr: IPGE): Integer; stdcall;
function pdfSetPageOrientation(const IPDF: PPDF; PagePtr: IPGE; Value: Integer): LongBool; stdcall;
function pdfGetOrientation(const IPDF: PPDF): Integer; stdcall;
function pdfSetOrientation(const IPDF: PPDF; Value: Integer): LongBool; stdcall;
function pdfSetOrientationEx(const IPDF: PPDF; Value: Integer): LongBool; stdcall;

Purpose. Set/get page rotation (/Rotate) — via explicit page pointer (*PageOrientation) or the current page (Get/SetOrientation).

Description. pdfGetPageOrientation/pdfSetPageOrientation are real (Pg.Rotation) — pdfSetPageOrientation accepts both raw degree values (0/90/180/270) and a small 0-3 quadrant-index convention (1→90, 2→180, 3→270), with any other value falling back to 0. pdfSetOrientation and pdfSetOrientationEx are verified to be the literal identical implementation — both call SetPageOrient(Value) on the current page with no difference whatsoever; pdfGetOrientation reads it back (GetPageOrient).

Parameters.

Parameter	Description
`IPDF`	Document handle. (GetPageOrientation doesn't take one at all.)
`PagePtr`	(Page-pointer variants) A page pointer from `pdfGetPageObject`.
`Value`	Rotation: raw degrees or the `0..3` quadrant convention (page-pointer setter only; the current-page setters' exact accepted range is not independently re-verified beyond confirming both route to the same `SetPageOrient`).

Return value. Getters: rotation in degrees; 0 if invalid. Setters: True on success.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Core SDK