Advanced page content APIs

PageObjectInfo returns one TPdfPageObjectInfo snapshot containing the handle, object type, normal and rotated bounds, effective matrix, active state, transparency, fill and stroke colours, alpha values, stroke width, line join, line cap, dash array, and dash phase

HasRotatedBounds, HasActiveState, and the other Has* fields distinguish an unavailable native value from a valid zero value

RotatedBounds carries the rotated quadrilateral, HasLineJoin and HasLineCap gate the join and cap styles, and DashPhase offsets the start of the dash pattern

UpdatePageObject applies every selected field to the same native object and regenerates page content once

TransformPageObject composes an affine FS_MATRIX with the selected object

• PathInfo returns fill mode, stroke state, segment type, endpoint, and close state for every path segment
• PageObjectClipPath returns every clip subpath and segment associated with a page object
• TransformPageObjectClipPath(Index, Matrix) transforms only that clip geometry and leaves the page-object matrix unchanged
• FormObjectChildren returns detailed snapshots for the immediate children of a Form XObject
• DetachFormObjectChild(FormIndex, ChildIndex) removes one child and transfers ownership of the returned FPDF_PAGEOBJECT to the caller, which must insert or destroy it

• PageObjectMarks, PageObjectMarkedContentID, AddPageObjectMark, SharePageObjectMark, SetPageObjectMarkParam, RemovePageObjectMarkParam, and RemovePageObjectMark inspect, reuse, and update marked-content associations without replacing unrelated properties
• TextObjectGlyphOutline exposes glyph path geometry, whilst TextObjectGlyphWidth(Index, GlyphIndex, FontSize) returns the native glyph advance at the requested size
• TextObjectFontSize(Index) reads the native text-object size and SetTextObjectFontSize(Index, FontSize) edits it without approximating through a matrix transform
• GetImageObjectRenderedBitmap(Index) returns a caller-owned bitmap with the image mask, colour conversion, and image matrix applied by PDFium
• AnnotationObjectCount, AnnotationObjectInfo, AddPathToAnnotation, and RemoveAnnotationObject operate on annotation appearance objects
• IsAnnotationObjectSubtypeSupported(Subtype) probes whether the loaded PDFium module supports appearance-object extraction, update, and removal for the subtype
• PerformNamedAction dispatches a known document action and OnNamedAction reports named-action callbacks

CharacterInfo returns fill and stroke colours, font name, PDF font flags, loose glyph bounds, effective matrix, and the associated text-object handle

CharacterIndexToTextIndex and TextIndexToCharacterIndex convert between PDFium character indexes and indexes in the generated text stream

TPdfAnnotation exposes border radii and width through HasBorder, BorderHorizontalRadius, BorderVerticalRadius, and BorderWidth

Colour coverage extends to ColorAlpha, InteriorColor, and InteriorColorAlpha, markup metadata is gated by HasAuthor, HasName, HasSubject, HasModificationDate, HasCreationDate, and HasIcon, and ink gestures, quad-point geometry, and link targets are exposed through InkList, HasAttachmentPoints, HasLinkUri, and LinkUri

Normal, rollover, and down appearance streams are available through the HasAppearanceNormal, HasAppearanceRollover, and HasAppearanceDown sentinels and their matching AppearanceNormal, AppearanceRollover, and AppearanceDown strings

When reading an annotation, these sentinels identify nonempty appearance content: the native API returns the same empty string for a missing stream and an empty stream, so both report False and are left untouched when the record is written back; callers can still explicitly set a sentinel to True to write an empty appearance

Assign the updated annotation record back to Annotation[Index] to write selected border or appearance values

• ConfigurePdfLibrary, GetPdfLibraryConfiguration, and PdfLibraryConfigurationSealed configure and audit the immutable process-wide native initialisation and sandbox policy before the first load
• TPdfLibraryConfiguration carries UserFontPaths, V8Isolate, V8EmbedderSlot, V8Platform, Renderer, FontBackend, BrotliEnabled, IsolatePerDocument and AllowMachineTime, and uses TPdfRendererPreference (prpDefault, prpAgg, prpSkia) and TPdfFontBackendPreference (pfbpDefault, pfbpFreeType, pfbpFontations) to select only the native fields that the requested configuration needs
• PdfDefaultTtfMapCount and TryGetPdfDefaultTtfMapEntry enumerate native default font substitutions with checked indexed access
• TPdfDefaultTtfMapEntry copies the face name, charset, and native platform font metadata from one indexed mapping entry
• FormFieldZOrderAtPoint and LinkZOrderAtPoint return the frontmost native z-order or -1 when no target exists
• TryGetAnnotationFileAttachment copies bounded file metadata and payload whilst its native annotation handle is valid
• TPdfAnnotationAttachment owns that copied metadata and payload independently of the page and annotation handles
• GetLinkedAnnotationIndex and GetLinkedAnnotationChain resolve Popup and IRT relationships with dangling-reference, cycle, and depth protection
• TPdfAnnotationRelationship selects the Popup (parPopup) or IRT (parInReplyTo) relationship and TPdfAnnotationSubtypes stores the focus-policy subtype array
• GetAnnotationDictionaryValue and GetAttachmentDictionaryValue report the exact native value kind before returning a supported scalar value
• TPdfDictionaryValueKind preserves the native object category (pdvkUnknown, pdvkBoolean, pdvkNumber, pdvkString, pdvkName, pdvkArray, pdvkDictionary, pdvkStream, pdvkNull, pdvkReference) and TPdfDictionaryValue carries the supported number or string scalar in NumberValue and StringValue with HasScalarValue as the explicit sentinel
• SetFocusableAnnotationSubtypes and GetFocusableAnnotationSubtypes control keyboard-focus eligibility through the native form handle
• TPdfStructureElement.Attributes is a TPdfStructureAttributeValues flat tree whose TPdfStructureAttributeValue nodes tie back to their owning attribute dictionary through AttributeIndex and preserve typed nested values and lossless blobs in BlobValue
• TPdfView.FormFieldZOrderAt, TPdfView.LinkZOrderAt, and TPdfView.ReplaceFormTextAndKeepSelection expose the matching coordinate conversion and selection-preserving form operations through the visual control

• ThumbnailRawData returns the embedded thumbnail stream before filter decoding
• ThumbnailDecodedData returns the embedded thumbnail stream after filter decoding
• TransformPageContent transforms and clips all page objects, regenerates the page, and reloads its derived handles
• TransformPageAnnotations applies the same affine coordinate model to all annotations on the current page

RenderPageWithMatrix accepts an invertible FS_MATRIX and a clipping rectangle in device coordinates

The overload that receives a caller-owned TBitmap renders directly into a compatible 32-bit DIB and falls back to one copy only when an external PDFium bitmap cannot be created

Matrix rendering draws page content and non-interactive annotations selected through render flags, but it does not invoke the form-fill overlay renderer