Close a font handle

Releases the underlying PDFium font. Idempotent — a second call is a no-op. The finalizer attached to the externalptr also runs this when R garbage-collects the pdfium_font, but explicit close is useful when many large fonts have been loaded and you want deterministic release.

Usage

pdf_font_close(font)

Arguments

font

A pdfium_font from pdf_font_load_standard() or pdf_font_load().

Value

Invisibly returns font.

Details

Closing a font does not invalidate text objects that already used it — PDFium keeps an internal reference. Only the embedder's R-side handle is released.