static int width_dcbutton(Bar *bar, BarArg *a);
static int draw_dcbutton(Bar *bar, BarArg *a);
static int click_dcbutton(Bar *bar, Arg *arg, BarArg *a);
static int width_dcbutton2(Bar *bar, BarArg *a);
static int draw_dcbutton2(Bar *bar, BarArg *a);
static int click_dcbutton2(Bar *bar, Arg *arg, BarArg *a);
static int width_dcbutton3(Bar *bar, BarArg *a);
static int draw_dcbutton3(Bar *bar, BarArg *a);
static int click_dcbutton3(Bar *bar, Arg *arg, BarArg *a);