RequestBlock (PVIOD) - input

Address of the video state structures (consisting of six different structures, depending on the request type):

Type

Definition
0
Set palette registers
1
Set overscan (border) color
2
Set blink/background intensity switch
3
Set color registers
4
Reserved
5
Set underline location
6
Set target VioSetMode display configuration
The six structures, depending on request type, are:

• VIOPALSTATE 
  VIOOVERSCAN
  
  VIOINTENSITY
  
  VIOCOLORREG
  
  VIOSETULINELOC
  
  VIOSETTARGET

  VioHandle (HVIO) - input

  VIO presentation-space handle

  Reserved. Must be 0.

  rc (APIRET) - returns

  Return code.

  VioSetState returns one of the following values:

  • NO_ERROR 355
    ERROR_VIO_MODE
    421
    ERROR_VIO_INVALID_PARMS
    436
    ERROR_VIO_INVALID_HANDLE
    438
    ERROR_VIO_INVALID_LENGTH

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