`pdfPolygonAnnot`

Create a PolyLine (open, /Subtype /PolyLine) or Polygon

int32_t __stdcall pdfPolyLineAnnotA(PPDF IPDF, PFltPoint Vertices, uint32_t NumVertices, double LineWidth, TLineEndStyle lStart, TLineEndStyle lEnd, uint32_t FillColor, uint32_t StrokeColor, TPDFColorSpace CS, const char* Author, const char* Subject, const char* Content);
int32_t __stdcall pdfPolygonAnnotA(PPDF IPDF, PFltPoint Vertices, uint32_t NumVertices, double LineWidth, uint32_t FillColor, uint32_t StrokeColor, TPDFColorSpace CS, const char* Author, const char* Subject, const char* Content);

Delphi

function pdfPolyLineAnnotA(const IPDF: PPDF; Vertices: PFltPoint; NumVertices: Cardinal; LineWidth: Double; lStart, lEnd: TLineEndStyle; FillColor, StrokeColor: Cardinal; CS: TPDFColorSpace; const Author, Subject, Content: PAnsiChar): Integer; stdcall;
function pdfPolygonAnnotA(const IPDF: PPDF; Vertices: PFltPoint; NumVertices: Cardinal; LineWidth: Double; FillColor, StrokeColor: Cardinal; CS: TPDFColorSpace; const Author, Subject, Content: PAnsiChar): Integer; stdcall;

Purpose. Create a PolyLine (open, /Subtype /PolyLine) or Polygon (closed, /Subtype /Polygon) annotation from an arbitrary vertex list.

Description. Both are the literal same underlying function (AddPolyAnnot) with a boolean IsPolyline discriminator. pdfPolyLineAnnot's lStart/lEnd are also dropped at creation — same pattern as pdfLineAnnot above; use pdfSetAnnotLineEndStyle afterward (PolyLine annotations support /LE too, per the PDF spec, though this chapter did not independently re-verify that the setter's underlying implementation special-cases PolyLine vs Line targets).

Parameters.

Parameter	Description
`IPDF`	Document handle.
`Vertices`, `NumVertices`	Polygon/polyline vertex list.
`LineWidth`	Stroke width.
`lStart`, `lEnd`	(PolyLine only) Accepted but dropped — same as `pdfLineAnnot`.
`FillColor`, `StrokeColor`	Packed colors (`CS` dropped, always RGB).
`Author`, `Subject`, `Content`	`/T`, `/Subj`, `/Contents`.

Return value. The new annotation's handle; 0 on failure.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

public static extern int pdfPolygonAnnotA(IntPtr IPDF, IntPtr Vertices, uint NumVertices, double LineWidth, uint FillColor, uint StrokeColor, TPDFColorSpace CS, [MarshalAs(UnmanagedType.LPStr)] string Author, [MarshalAs(UnmanagedType.LPStr)] string Subject, [MarshalAs(UnmanagedType.LPStr)] string Content);
public static extern int pdfPolygonAnnotW(IntPtr IPDF, IntPtr Vertices, uint NumVertices, double LineWidth, uint FillColor, uint StrokeColor, TPDFColorSpace CS, [MarshalAs(UnmanagedType.LPWStr)] string Author, [MarshalAs(UnmanagedType.LPWStr)] string Subject, [MarshalAs(UnmanagedType.LPWStr)] string Content);

Area

Annotations