`pdfChangeJavaScript`

Replace the script text of a document-level named JavaScript

Exported names	`pdfChangeJavaScriptA`, `pdfChangeJavaScriptW`

Purpose — Replace the script text of a document-level named JavaScript entry (the /Names/JavaScript table, not an action object).

Description — This operates on a different registry than pdfCreateJSAction/pdfChangeJavaScriptAction. Named document-level scripts are added by the engine's AddJavaScript(Name, Script, Unicode) (a name-keyed table, FJSName/FJSScript, its own 1-based handle space starting at 1) — this call rewrites the script at Handle in *that* table. Passing an action handle from pdfCreateJSAction here is a handle-space mismatch and will silently fail or hit the wrong slot; the two handle spaces are not interchangeable. Handle must be non-empty-named (FJSName[Handle-1] <> '') for the call to succeed.

Declarations

BOOL32 __stdcall pdfChangeJavaScriptA(PPDF IPDF, uint32_t Handle, const char* NewScript);
BOOL32 __stdcall pdfChangeJavaScriptW(PPDF IPDF, uint32_t Handle, const wchar_t* NewScript);

Delphi

function pdfChangeJavaScriptA(const IPDF: PPDF; Handle: Cardinal; const NewScript: PAnsiChar): LongBool; stdcall; external 'LumasPdf.dll';
function pdfChangeJavaScriptW(const IPDF: PPDF; Handle: Cardinal; const NewScript: PWideChar): LongBool; stdcall; external 'LumasPdf.dll';

Parameters

Parameter	Type	Description
`IPDF`	`PPDF`	Instance handle.
`Handle`	`Cardinal`	1-based handle into the named-JavaScript table (returned by the internal `AddJavaScript`, not by `pdfCreateJSAction`).
`NewScript`	string	Replacement script. `W` is stored with its Unicode flag set.

Return value — TRUE on success; FALSE if Handle is out of range or names an empty slot.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Core SDK