Function imagequant_sys::liq_set_max_colors

pub unsafe extern "C" fn liq_set_max_colors(
    attr: &mut liq_attr,
    colors: c_int
) -> liq_error

Specifies maximum number of colors to use.

The default is 256. Instead of setting a fixed limit it’s better to use liq_set_quality(). The first argument is attributes object from liq_attr_create(). Returns LIQ_VALUE_OUT_OF_RANGE if number of colors is outside the range 2-256.