Function uiColorButtonOnChanged 

pub unsafe extern "C" fn uiColorButtonOnChanged(
    b: *mut uiColorButton,
    f: Option<unsafe extern "C" fn(sender: *mut uiColorButton, senderData: *mut c_void)>,
    data: *mut c_void,
)

Registers a callback for when the color is changed.

@param b uiColorButton instance. @param f Callback function.\n @p sender Back reference to the instance that triggered the callback.\n @p senderData User data registered with the sender instance. @param data User data to be passed to the callback.

@note The callback is not triggered when calling uiColorButtonSetColor(). @note Only one callback can be registered at a time. @memberof uiColorButton