Name

PQDUS − Returns current display update information. 

Operating States: PHOP, WSOP, ∗, ∗
PHIGS standard function

Syntax

PQDUS (WKID, ERRIND, DEFMOD, MODMOD, DEMPTY, STOFVR)

Argument          Data Type      Access    Description
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WKID              Integer        Read      Workstation identifier
ERRIND            Integer        Write     Error indicator
DEFMOD            Integer        Write     Deferral mode
MODMOD            Integer        Write     Modification mode
DEMPTY            Integer        Write     Display surface empty flag
STOFVR            Integer        Write     State of the visual
                                           representation
---------------------------------------------------------------------------

Constants

Defined Argument   Constant    Description
---------------------------------------------------------------------------
DEFMOD             PASAP       Generate images as soon as possible.
                   PBNIG       Generate images before the next interaction
                               globally, or before a sample or event input
                               occurs.
                   PBNIL       Generate images before the next interaction
                               locally, or before a sample or event input
                               occurs.
                   PASTI       Generate images at some time.  The workstation
                               determines the exact time.
                   PWAITD      The workstation waits to generate input.
MODMOD             PNIVE       No immediate visual effect.
                   PUWOR       Update without regeneration.
                   PUQUM       Use quick update methods.
DEMPTY             PNEMPT      Display surface is not empty.
                   PEMPTY      Display surface is empty.
STOFVR             PVROK       Correct.
                   PVRDFR      Deferred.
                   PVRSIM      Simulated.
---------------------------------------------------------------------------

Description

PQDUS queries the workstation state list and returns the current deferral mode, modification mode, display surface empty flag, and the state of visual representation.  If simulated and deferred actions exist simultaneously, the state of visual representation entry is PVRDFR. 

See Also

PQDDUS
PRST
PSDUS
PUWK