`pdfSetTextUnderlineWidth`

Set the underline stroke width.

Category	Text decoration

Purpose — Set the underline stroke width.

Declarations

int32_t __stdcall pdfSetTextUnderlineWidth(PPDF IPDF, double UnderlineWidth);

Delphi

function pdfSetTextUnderlineWidth(const IPDF: PPDF; UnderlineWidth: Double): Integer; stdcall; external 'LumasPdf.dll';

Parameters

Parameter	Type	Description
`IPDF`	`PPDF`	Instance handle.
`UnderlineWidth`	`Double`	Stroke width in points. `0` or negative (the sentinel) falls back to `fontSize × 0.05` at draw time — same "0 means unset" pattern as `pdfSetTextUnderlineDistance`.

Return value — 1 on a valid handle; 0 on an invalid handle.

See also — pdfSetTextUnderlineDistance

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

public static extern int pdfSetTextUnderlineWidth(IntPtr IPDF, double UnderlineWidth);

Area

Text