rem: RHSVColor	cur_hsv;
context: grayInit(W_ColorPanel *panel){    RHSVColor	cur_hsv;    int		value;    char	tmp[4];        RRGBtoHSV(&panel->color, &cur_hsv);        value = rint(cur_hsv.value/2.55);	    WMSetSliderValue(panel->grayBrightnessS, value);        sprintf(tmp, "%d", value);    WMSetTextFieldText(panel->grayBrightnessT, tmp);}