h6. [[WindowManager]] h6(. » [[WindowManager Messages|Messages]] h6((. » [[Message Codes|Message Codes]] h6(((. » [[Message_ColourPickerColourChoice]] h6((((. » [[ColourPicker Colour Descriptor]] h6(((((. » Descriptor Extension Types h2. Descriptor Extension Types |_<^{width:4em}. Type|_<^. Meaning| |<^. 0|<^. RGB data (16 bytes of extension data)| |>^. +12|<^. Red Value| |>^. +16|<^. Green Value| |>^. +20|<^. Red Value| |<^. 1|<^. CMYK data (20 bytes of extension data)| |>^. +12|<^. Cyan Value| |>^. +16|<^. Magenta Value| |>^. +20|<^. Yellow Value| |>^. +24|<^. Key Value| |<^. 2|<^. HSW data (16 bytes of extension data)| |>^. +12|<^. Hue Value| |>^. +16|<^. Saturation Value| |>^. +20|<^. Value Percentage| h4. Notes Each extension type enforces a different meaning of data from message block +20 onwards. Information on ColourTrans fixed point data is available [[ColourTrans Fixed Point|here]]. h4. See also * [[Message Codes]] * [[Message_ColourPickerColourChoice]] * [[Wimp_Poll]]