THotPDF.RegisterTransferFunctionState Method
Registers a reusable transfer function state resource for the document creation workflow. Call it before page commands reference the resource name so colour, pattern, font, image, or profile data is available in the PDF resource tree
Declaration
function RegisterTransferFunctionState(Combined: THPDFObject; const PerChannel: array of THPDFObject): AnsiString;Unit
HPDFDoc
Parameters
| Name | Purpose |
|---|---|
Combined | Input used by RegisterTransferFunctionState |
PerChannel | Input used by RegisterTransferFunctionState |
Return value
Returns an AnsiString value
Usage notes
- Use this API in the document creation workflow before the affected page, resource, field, or catalog object is finalised
- Keep object names, field names, resource names, and returned handles stable until the document is finalised