`pdfDrawArc`

Draw a circular arc and stroke it.

Category	Immediate-paint shapes
Note	always strokes, no `FillMode` parameter exists (see Remarks)

Purpose — Draw a circular arc and stroke it.

Declarations

BOOL32 __stdcall pdfDrawArc(PPDF IPDF, double PosX, double PosY, double Radius, double StartAngle, double EndAngle);

Delphi

function pdfDrawArc(const IPDF: PPDF; PosX, PosY, Radius, StartAngle, EndAngle: Double): LongBool; stdcall; external 'LumasPdf.dll';

Parameters

Parameter	Type	Description
`IPDF`	`PPDF`	Instance handle.
`PosX`, `PosY`	`Double`	Arc center.
`Radius`	`Double`	Radius.
`StartAngle`, `EndAngle`	`Double`	Arc sweep, in degrees.

Return value — TRUE on success; FALSE if no content stream is open.

Remarks — verified: no fill option exists for this call. Unlike every other shape in this chapter, pdfDrawArc has no FillMode parameter at all — it unconditionally emits a plain S (stroke) after the arc path, equivalent to always passing fmStrokeNoClose (value 1). There is no way to fill an arc sector or leave it unpainted through this call; for a filled wedge, see pdfDrawPie (pie slice) or pdfDrawChord (straight chord closure), both of which do take FillMode.

See also — pdfDrawArcEx, pdfDrawChord, pdfDrawPie, pdfDrawNGon (V03 — a regular-polygon primitive with the same immediate-paint pattern)

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Graphics