ERROR_MCA_UNSUPPORTED_COLOR_TEMPERATURE (15207)

Technical Background

The ERROR_MCA_UNSUPPORTED_COLOR_TEMPERATURE error is a specific error code that indicates the monitor did not support the color temperature specified by the caller of the SetMonitorColorTemperature function. This error implies that the monitor violated the MCCS 2.0 or MCCS 2.0 Revision 1 specification.

Error Details

The error code ERROR_MCA_UNSUPPORTED_COLOR_TEMPERATURE is returned when a call to SetMonitorColorTemperature fails because the specified color temperature is not supported by the current monitor. This can occur if the monitor does not have the capability to adjust its color temperature to the value requested.

Common Causes

Invalid parameter values: The caller provided an unsupported color temperature value that exceeds the capabilities of the monitor.
Incorrect usage context: The function SetMonitorColorTemperature was called in a context where it is not applicable, such as when the monitor does not support color temperature adjustment.

Real-World Context

This error can occur during attempts to adjust the color temperature settings on a display. If the monitor does not support the specified color temperature, this error will be returned, indicating that the requested operation cannot be performed.

Is This Error Critical?

The criticality of this error depends on the application's requirements and the specific use case. For applications that rely heavily on accurate color representation, such as graphic design or photography software, this error could be considered critical. However, for general-purpose applications where color accuracy is not a primary concern, it may be less significant.

How to Diagnose

To diagnose this issue, developers should:

Review the operation context: Ensure that the SetMonitorColorTemperature function is being called in an appropriate context where monitor color temperature adjustment is supported.
Validate parameters: Verify that the color temperature value provided to the function falls within the range supported by the monitor. Refer to the monitor's specifications or documentation for this information.

How to Resolve

To resolve this issue, developers should:

Correct parameter usage: Ensure that the color temperature values passed to SetMonitorColorTemperature are within the supported range of the monitor.
Adjust operation context: If the monitor does not support color temperature adjustment, consider using alternative methods or functions that do not rely on this feature. For example, if the application is designed for monitors with limited color temperature capabilities, it may be necessary to provide a default color temperature setting or allow users to choose from a predefined set of supported values.

Developer Notes

Developers should be aware that the SetMonitorColorTemperature function will fail and return this error code if the monitor does not support the specified color temperature. This behavior is consistent with the MCCS 2.0 specification, which defines the capabilities and limitations of monitors regarding color temperature adjustment.

Related Errors

ERROR_MONITOR_NO_DESCRIPTOR: Indicates that no monitor descriptor was found for the specified monitor handle.
ERROR_MCA_INVALID_COLOR_TEMPERATURE: Occurs when an invalid color temperature value is provided to SetMonitorColorTemperature.

FAQ

Q: What does the error code 15207 (0x3B67) indicate?

A: The error code 15207 (0x3B67) indicates that the monitor did not support the color temperature specified by the caller of SetMonitorColorTemperature.

Q: How can I determine if a monitor supports color temperature adjustment?

A: Refer to the monitor's specifications or documentation. Monitors that do not support color temperature adjustment will not respond to calls to SetMonitorColorTemperature with this error code.

Summary

The ERROR_MCA_UNSUPPORTED_COLOR_TEMPERATURE error is returned when an attempt to set a specific color temperature on a monitor fails because the monitor does not support that particular value. This error is consistent with the MCCS 2.0 specification and should be handled by ensuring that parameters are within supported ranges and operation contexts are appropriate.