`pdfSetFieldFontSize`

Set a field's /DA font size, preserving the existing font

Category	Form field fonts

Purpose — Set a field's /DA font size, preserving the existing font name and color operators.

Declarations

BOOL32 __stdcall pdfSetFieldFontSize(PPDF IPDF, uint32_t AField, double FontSize);

Delphi

function pdfSetFieldFontSize(const IPDF: PPDF; AField: Cardinal; FontSize: double): LongBool; stdcall; external 'LumasPdf.dll';

Parameters

Parameter	Type	Description
`IPDF`	`PPDF`	Instance handle.
`AField`	`Cardinal`	Target field handle.
`FontSize`	`Double`	New size. `0` is a valid PDF convention meaning "auto-size" — check the field-rendering guidance (V09 Forms) for how a viewer interprets it.

Return value — TRUE if AField is valid; FALSE otherwise.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Fonts