`pdfSetTrialMode`

Opt into stamping a demo/trial watermark on output while the

BOOL32 __stdcall pdfSetTrialMode(PPDF IPDF, BOOL32 Enable);

Delphi

function pdfSetTrialMode(const IPDF: PPDF; Enable: LongBool): LongBool; stdcall;

Purpose. Opt into stamping a demo/trial watermark on output while the document is unlicensed.

Description. Real: FTrialMode is consulted alongside the license validity flag (demo := FTrialMode and not FLicenseValid) to decide whether a demo watermark is applied at serialization — this is a genuine, functioning trial/demo-mode toggle, not a no-op.

Parameters.

Parameter	Description
`IPDF`	Document handle.
`Enable`	Whether to opt into demo-watermark behavior while unlicensed.

Return value. True if IPDF is valid.

See also. pdfSetLicenseKey, pdfIsLicensed.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Core SDK