XcmsTekHVCQueryMaxC, XcmsTekHVCQueryMaxV, XcmsTekHVCQueryMaxVC,
  XcmsTekHVCQueryMaxVSamples, XcmsTekHVCQueryMinV - obtain the TekHVC
  coordinates
Status XcmsTekHVCQueryMaxC(XcmsCCC ccc, XcmsFloat
    hue, XcmsFloat value, XcmsColor *color_return);
Status XcmsTekHVCQueryMaxV(XcmsCCC ccc, XcmsFloat
    hue, XcmsFloat chroma, XcmsColor *color_return);
Status XcmsTekHVCQueryMaxVC(XcmsCCC ccc, XcmsFloat
    hue, XcmsColor *color_return);
Status XcmsTekHVCQueryMaxVSamples(XcmsCCC ccc, XcmsFloat
    hue, XcmsColor colors_return[], unsigned int
  nsamples);
Status XcmsTekHVCQueryMinV(XcmsCCC ccc, XcmsFloat
    hue, XcmsFloat chroma, XcmsColor *color_return);
  - ccc
- Specifies the CCC. Note that the CCC's Client White Point and White Point
      Adjustment procedures are ignored.
- chroma
- Specifies the chroma at which to find maximum Value (MaxV).
- colors_return
- Returns nsamples of color specifications in XcmsTekHVC such that the
      Chroma is the maximum attainable for the Value and Hue. The white point
      associated with the returned color specification is the Screen White
      Point. The value returned in the pixel member is undefined.
- color_return
- Returns the maximum Chroma along with the actual Hue and Value (MaxC),
      maximum Value along with the Hue and Chroma (MaxV), color specification in
      XcmsTekHVC for the maximum Chroma, the Value at which that maximum Chroma
      is reached and actual Hue (MaxVC) or minimum Value and the actual Hue and
      Chroma (MinL) at which the maximum Chroma (MaxC and MaxVC), maximum Value
      (MaxV), or minimum Value (MinL) was found. The white point associated with
      the returned color specification is the Screen White Point. The value
      returned in the pixel member is undefined.
- hue
- Specifies the Hue in which to find the maximum Chroma (MaxC and MaxVC),
      maximum Value (MaxV), the maximum Chroma/Value samples (MaxVSamples), or
      the minimum Value (MinL).
- nsamples
- Specifies the number of samples.
- value
- Specifies the Value in which to find the maximum Chroma (MaxC) or minimum
      Value (MinL).
The XcmsTekHVCQueryMaxC function, given a Hue and Value, determines the
  maximum Chroma in TekHVC color space displayable by the screen. It returns the
  maximum Chroma along with the actual Hue and Value at which the maximum Chroma
  was found.The XcmsTekHVCQueryMaxV function, given a Hue and Chroma,
    determines the maximum Value in TekHVC color space displayable by the
    screen. It returns the maximum Value and the actual Hue and Chroma at which
    the maximum Value was found.
The XcmsTekHVCQueryMaxVC function, given a Hue, determines
    the maximum Chroma in TekHVC color space displayable by the screen and the
    Value at which that maximum Chroma is reached. It returns the maximum
    Chroma, the Value at which that maximum Chroma is reached, and the actual
    Hue for which the maximum Chroma was found.
The XcmsTekHVCQueryMaxVSamples returns nsamples of maximum
    Value, the Chroma at which that maximum Value is reached, and the actual Hue
    for which the maximum Chroma was found. These sample points may then be used
    to plot the maximum Value/Chroma boundary of the screen's color gamut for
    the specified Hue in TekHVC color space.
The XcmsTekHVCQueryMinV function, given a Hue and Chroma,
    determines the minimum Value in TekHVC color space displayable by the
    screen. It returns the minimum Value and the actual Hue and Chroma at which
    the minimum Value was found.
XcmsCIELabQueryMaxC(3), XcmsCIELuvQueryMaxC(3), XcmsQueryBlack(3)
Xlib - C Language X Interface