https://learn.microsoft.com/en-us/dotnet/api/accessibility.iaccessible.accstate?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
IAccessible.accState[Object] Property (Accessibility) | Microsoft Learn
The IAccessible interface and all of its exposed members are part of a managed wrapper for the Component Object Model (COM) IAccessible interface.
object propertyaccessibilitymicrosoftlearn