PDFTron iOS Docs

PDFTron iOS Reference PTAnnotStyleKeyOpacity Constant Reference

Viewer Controls
Common Protocols
Common Classes
PDF Interaction Tools
UI Controls
Annotation Classes
- PTAnnot
- PTCaret
- PTCircle
- PTFileAttachment
- PTFreeText
- PTHighlightAnnot
- PTInk
- PTLineAnnot
- PTLink
- PTMarkup
- PTMovie
- PTPolygon
- PTPolyLine
- PTPopup
- PTRedactionAnnot
- PTRubberStamp
- PTScreen
- PTSound
- PTSquare
- PTSquiggly
- PTStrikeOut
- PTText
- PTTextMarkup
- PTUnderline
- PTWatermark
- PTWidget
Annotation Enumerations
Helper and Abstract Classes
Text Search Classes
Field Classes
- PTField
- PTFieldIterator
Field Enumerations
Conversion Classes
FDF Classes
Filter Classes
OCG Classes
- PTConfig
- PTContext
- PTGroup
- PTOCMD
OCG Enumerations
- PTOCDrawMode
- PTVisibilityPolicyType
PDFA Classes
- PTPDFACompliance
PDFA Enumerations
- PTConformance
- PTErrorCode
Structure Classes
Structure Enumerations
- PTContentItemType
SDF Classes
SDF Enumerations
Notifications
Protocols
PTToolManager Notifications
PTExtendedAnnotName
PTAnnotStyleKey
PTBookmarkInfoKey
Viewer Control Constants
- PTDocumentViewControllerHideControlsInterval
- PTDocumentViewControllerSaveDocumentInterval
Other Classes
Other Constants
Other Enumerations
Other Protocols
Other Type Definitions
Other Functions

PTAnnotStyleKeyOpacity

extern const PTAnnotStyleKey _Nonnull PTAnnotStyleKeyOpacity

Annotation opacity.

© 2026 PDFTron Systems, Inc.. All rights reserved. (Last updated: 2026-01-02)