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ERROR_GRAPHICS_MCA_UNSUPPORTED_COLOR_TEMPERATURE
Color-temperature presets are discrete capabilities
ERROR_GRAPHICS_MCA_UNSUPPORTED_COLOR_TEMPERATURE is returned when the requested high-level color-temperature value is not supported by the physical monitor. Unlike a continuous red, green, or blue gain control, the color-temperature API selects from defined presets whose availability is reported by the monitor capabilities.
Call GetMonitorCapabilities and the related color-temperature query before setting a preset. Preserve the active picture mode, HDR state, and input, because monitors often expose different color controls in different modes. Do not approximate an unavailable preset by writing undocumented VCP values; use supported gain controls only when the application intentionally performs its own calibration.
Color-control evidence
- Requested preset and the monitor-reported supported presets.
- Current color-temperature setting before the call.
- Picture mode, HDR mode, and active input connector.
- Availability of separate RGB gain controls for calibrated workflows.
References
- Microsoft: monitor color-temperature and RGB controls
- Microsoft: capability-driven high-level monitor API
- ddcutil: MCCS feature categories and presets
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