`pdfSetFieldFontEx`

Nominally: associate a specific, already-loaded document font

Category	Form field fonts
Note	`Handle` is completely ignored (see Remarks)

Purpose — Nominally: associate a specific, already-loaded document font (by handle) with a field, at a given size.

Description — the signature promises more than the implementation does. Despite taking a Handle parameter (presumably meant to reference a font entry from pdfSetFont/pdfLoadFont, analogous to how pdfChangeFontEx works for page text), this call only sets the field's font size — it calls the exact same SetFieldFontSizeH as pdfSetFieldFontSize and never reads Handle at all. There is no code path in this build that assigns a specific document font handle to a field's /DA — only a font *name* via pdfSetFieldFont.

Declarations

BOOL32 __stdcall pdfSetFieldFontEx(PPDF IPDF, uint32_t Field, uint32_t Handle, double FontSize);

Delphi

function pdfSetFieldFontEx(const IPDF: PPDF; Field, Handle: Cardinal; FontSize: double): LongBool; stdcall; external 'LumasPdf.dll';

Parameters

Parameter	Type	Description
`IPDF`	`PPDF`	Instance handle.
`Field`	`Cardinal`	Target field handle.
`Handle`	`Cardinal`	Accepted but not read — see Description.
`FontSize`	`Double`	New font size.

Return value — Same as pdfSetFieldFontSize (this call is that function under a different name, with an inert extra parameter).

See also — pdfSetFieldFont (the call that actually sets the font *name*)

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Fonts