`pdfInitOCGContUsage`

Initialize a TPDFOCGContUsage record to its "unset" state

Category	Optional content

Purpose — Initialize a TPDFOCGContUsage record to its "unset" state before populating it for pdfSetOCGContUsage.

Description — Zero-fills the record, sets StructSize, and sets ViewState, PrintState, ExportState, UserType to -1 (unset — leaving them at -1 when passed to pdfSetOCGContUsage means "don't change this field").

Declarations

BOOL32 __stdcall pdfInitOCGContUsage(TPDFOCGContUsage* Value);

Delphi

function pdfInitOCGContUsage(var Value: TPDFOCGContUsage): LongBool; stdcall; external 'LumasPdf.dll';

Parameters

Parameter	Type	Description
`Value`	`TPDFOCGContUsage*`	Record to initialize. No `IPDF` parameter — purely a local memory operation.

Return value — TRUE; FALSE only if Value is NULL.

See also — pdfSetOCGContUsage

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

[return: MarshalAs(UnmanagedType.Bool)]

Area

Core SDK