`pdfComputeBBox`

Compute the current page's bounding box (its MediaBox, per

int32_t __stdcall pdfComputeBBox(PPDF IPDF, TPDFRect* BBox, TCompBBoxFlags Flags);

Delphi

function pdfComputeBBox(const IPDF: PPDF; var BBox: TPDFRect; Flags: TCompBBoxFlags): Integer; stdcall;

Purpose. Compute the current page's bounding box (its MediaBox, per the underlying GetCurrentPageBBox).

Description. Flags (TCompBBoxFlags) is accepted by the ABI but never passed through to GetCurrentPageBBox — whatever computation-mode selection the flag set implies (e.g. "compute from visible content" vs. "return the declared box") has no effect; the same fixed computation always runs regardless of Flags.

Parameters.

Parameter	Description
`IPDF`	Document handle.
`BBox`	Output box.
`Flags`	Accepted but silently dropped.

Return value. 1 on success; 0 if IPDF invalid or no page open.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

public static extern int pdfComputeBBox(IntPtr IPDF, ref TPDFRect BBox, uint Flags);

Area

Core SDK