pdfSetOnPageBreakProc

BOOL32 __stdcall pdfSetOnPageBreakProc(PPDF IPDF, void* Data, TOnPageBreakProc OnBreakProc);

function pdfSetOnPageBreakProc(const IPDF: PPDF; Data: Pointer; OnBreakProc: TOnPageBreakProc): LongBool; stdcall;

Purpose. Register a callback invoked whenever flowed/continued text writing (e.g. pdfBeginContinueText, Core Text Output) triggers an automatic page break — the callback can inspect the break position and return False to suppress the automatic break.

Description. Real and, per an inline source comment, was itself previously a documented gap: "cdecl TOnPageBreakProc callback... Was never invoked before" — confirming the callback is now genuinely fired at the actual page-break decision point (passing Data, the X position, current Y, and a fixed True continuation flag), with the callback's return value (<> 0) able to influence the break.

Parameters.

Return value. True if IPDF is valid.

See also. pdfBeginContinueText.

C# (P/Invoke)

[return: MarshalAs(UnmanagedType.Bool)]