Enterprise Toolkit > Windows Registry Reference

AVDisplay (Display Properties)


This preference category contains the following subfeature(s):

Reference Objects View Mode (XObjects)

Reference XObjects are defined in the PDF Reference fifth edition. A reference XObject is a form XObject which contains an optional Ref sub-dictionary. The sub-dictionary specifies a page in some target PDF file. The form XObject provides a proxy for the page in the target file, and Acrobat can display or print the proxy as well as the referenced page from the target file in place of the proxy.

On Windows, this feature interacts with the Trust Manager (TM). In fact, settings configured through the user interface work in tandem with TM settings and will not take effect unless privileged locations are defined for the parent document referencing the XObject. This is true whether enhanced security is enabled or not. To configure a privileged location manually (not through the UI), verify that cCrossDomain and cExternalStreams are set for the parent document.

Summary table
aFS Specifies the operating system hosting the XObject.
cRXOLocation A cab containing the location of referenced XObjects.
iRXOPolicy Sets XObject access to either Never (0), Always (1), or Only PDF/X-5 Compliant Ones (2).
sDI A binary representation of the XObject's location.
sDIText A text representation of the XObject's location.
Security hardeningSupported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type integer: DWORD value > REG_DWORD
Default 2
Version # 9.0 and later
HKCU Path AVDisplay
HKLM Path Not lockable
Summary Sets XObject access to either Never (0), Always (1), or Only PDF/X-5 Compliant Ones (2).
Details The user must also set cRXOLocation and (Windows only) specify a privileged location for each parent (referencing) document. Possible values include:
  • 0: Never
  • 1: Always
  • 2: Only PDF/X-5 Compliant Ones
GUI mapping Preferences > Show reference XObject targets
Supported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type n/a: Cabs are keys that contain subvalues in the right hand registry panel.
Default null
Version # 9.0 and later
HKCU Path AVDisplay
HKLM Path Not lockable
Summary A cab containing the location of referenced XObjects.
Details Contains the keys aFS, sDI, and tDIText. Only tDIText is customer-modifiable. The parent document must be specified as a privileged location (see Trust Manager).
GUI mapping Created when tDIText is set via Preferences > Page Display > Location of referenced files.
Not modifiableSupported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type atom: String value > REG_SZ
Default null
Version # 9.0 and later
HKCU Path AVDisplay\cRXOLocation
HKLM Path Not lockable
Summary Specifies the operating system hosting the XObject.
Details The parent document must be specified as a privileged location (see Trust Manager).
GUI mapping Created when tDIText is set via Preferences > Page Display > Location of referenced files.
Not modifiableSupported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type string: Binary value > REG_BINARY
Default null
Version # 9.0 and later
HKCU Path AVDisplay\cRXOLocation
HKLM Path Not lockable
Summary A binary representation of the XObject's location.
Details The parent document must be specified as a privileged location (see Trust Manager).
GUI mapping Created when tDIText is set via Preferences > Page Display > Location of referenced files.
Supported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type text: String value > REG_SZ
Default null
Version # 9.0 and later
HKCU Path AVDisplay\cRXOLocation
HKLM Path Not lockable
Summary A text representation of the XObject's location.
Details The parent document must be specified as a privileged location (see Trust Manager)
GUI mapping Set by Preferences > Page Display > Location of referenced files.

Page Content and Information

Specifies how documents render. These settings are controlled via the UI in Preferences > Page Display > Page Content and Information.

Summary table
bSmoothZooming Specifies whether smooth zooming should be enabled.
Supported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type boolean: DWORD value > REG_DWORD
Default
Version # 8.0 and later
HKCU Path AVDisplay
HKLM Path Not lockable
Summary Specifies whether smooth zooming should be enabled.
Details Possible values include:
  • 0: Disables smooth zooming
  • 1: Enables smooth zooming
GUI mapping Preferences > Page Display > Page Content and Information > use smooth zooming

Rendering

Specifies the application's rendering behavior. These settings are controlled via the UI in Preferences > Page Display > Rendering.

Summary table
bUse2DGPUf Specifies whether 2D graphics acceleration should be used.
bUseThinCode Specifies whether to enhance thin lines to improve visibility.
Supported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type boolean: DWORD value > REG_DWORD
Default
Version # 8.0 and later
HKCU Path AVDisplay
HKLM Path Not lockable
Summary Specifies whether 2D graphics acceleration should be used.
Details Possible values include:
  • 0: Disable
  • 1: Enable
GUI mapping Preferences > Page Display > Rendering > Use 2D graphics acceleration
Supported on WindowsSupported on MacSupported by AcrobatSupported by Adobe Reader
Data type boolean: DWORD value > REG_DWORD
Default 1
Version # 8.0 and later
HKCU Path AVDisplay
HKLM Path Not lockable
Summary Specifies whether to enhance thin lines to improve visibility.
Details Possible values include:
  • 0: Don't enhance thin lines.
  • 1: Enhance thin lines.
GUI mapping Preferences > Rendering > Enhance thin lines