`pdfSetFillColorEx`

Set the fill (resp. stroke) color from a byte array, one byte

BOOL32 __stdcall pdfSetFillColorEx(PPDF IPDF, uint8_t* Color, uint32_t NumComponents);
BOOL32 __stdcall pdfSetStrokeColorEx(PPDF IPDF, uint8_t* Color, uint32_t NumComponents);

Delphi

function pdfSetFillColorEx(const IPDF: PPDF; Color: PByte; NumComponents: Cardinal): LongBool; stdcall;
function pdfSetStrokeColorEx(const IPDF: PPDF; Color: PByte; NumComponents: Cardinal): LongBool; stdcall;

Purpose. Set the fill (resp. stroke) color from a byte array, one byte (0-255) per color component.

Description. Reads NumComponents bytes from Color, normalizes each to the 0.0..1.0 range by dividing by 255, and writes the result via EmitColorComps as the appropriate content-stream color operator for the currently active fill/stroke color space (e.g. 1 component → gray, 3 → RGB, 4 → CMYK, or scn/SCN with NumComponents operands for a registered non-device space such as DeviceN). This is the byte-per-channel counterpart of pdfSetFillColorF, which instead takes already-normalized floats — use whichever matches the caller's native color representation.

Parameters.

Parameter	Description
`IPDF`	Document handle.
`Color`	Pointer to `NumComponents` bytes, each `0..255`.
`NumComponents`	Number of color components (must match what the active color space expects).

Return value. True on success; False if there is no current content stream.

Memory & buffers. Color is read-only and copied into an internal array before emission; the caller's buffer is not retained.

See also. pdfSetFillColor, pdfSetFillColorF.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Graphics