SpectralGetActiveWavelength Last update: 17.07.2025 Description Gets the active wavelengths of a spectral map. Returns 1 if no error has occurred, 0 otherwise. Syntax object.SpectralGetActiveWavelength(VARIANT* ovWavelengthIndex) As Short object: Virtual Photometric Lab or Virtual Human Vision Lab object ovWavelengthIndex: VARIANT of the index of the active wavelength (-1 for all)