[11/28] refresh the windows instead of killing them and recreate

diff --git a/display.c b/display.c
index 2ab2167..dd5543c 100644
--- a/display.c
+++ b/display.c
@@ -45,31 +45,6 @@  static char *win_names[TOTAL_FEATURE_WINS] = {
 	"Sensors"
 };
 
-/* "all" : Kill header and footer windows too ? */
-void killall_windows(int all)
-{
-	if (all && header_win) {
-		delwin(header_win);
-		header_win = NULL;
-	}
-	if (regulator_win) {
-		delwin(regulator_win);
-		regulator_win = NULL;
-	}
-	if (clock_win) {
-		delwin(clock_win);
-		clock_win = NULL;
-	}
-	if (sensor_win) {
-		delwin(sensor_win);
-		sensor_win = NULL;
-	}
-	if (all && footer_win) {
-		delwin(footer_win);
-		footer_win = NULL;
-	}
-}
-
 static void display_fini(void)
 {
 	endwin();
@@ -99,18 +74,36 @@  int display_init(void)
 	    init_pair(PT_COLOR_RED, COLOR_WHITE, COLOR_RED))
 		return -1;
 
-	return atexit(display_fini);
-}
-
-void create_windows(int selectedwindow)
-{
+	if (atexit(display_fini))
+		return -1;
 
 	getmaxyx(stdscr, maxy, maxx);
-	killall_windows(1);
+
+	regulator_win = subwin(stdscr, maxy - 2, maxx, 1, 0);
+	if (!regulator_win)
+		return -1;
+
+	clock_win = subwin(stdscr, maxy - 2, maxx, 1, 0);
+	if (!clock_win)
+		return -1;
+
+	sensor_win = subwin(stdscr, maxy - 2, maxx, 1, 0);
+	if (!sensor_win)
+		return -1;
 
 	header_win = subwin(stdscr, 1, maxx, 0, 0);
+	if (!header_win)
+		return -1;
+
 	footer_win = subwin(stdscr, 1, maxx, maxy-1, 0);
+	if (!footer_win)
+		return -1;
+
+	return 0;
+}
 
+void create_windows(int selectedwindow)
+{
 	strcpy(footer_items[0], " Q (Quit) ");
 	strcpy(footer_items[1], " R (Refresh) ");
 
@@ -129,26 +122,19 @@  void create_windows(int selectedwindow)
 
 void create_selectedwindow(int selectedwindow)
 {
-	WINDOW *win;
-
-	killall_windows(0);
-
-	getmaxyx(stdscr, maxy, maxx);
-
-	win = subwin(stdscr, maxy - 2, maxx, 1, 0);
-
 	switch (selectedwindow) {
-	case REGULATOR: regulator_win = win;
+	case REGULATOR:
+		wrefresh(regulator_win);
 		break;
 
-	case CLOCK:     clock_win = win;
+	case CLOCK:
+		wrefresh(clock_win);
 		break;
 
-	case SENSOR:    sensor_win = win;
+	case SENSOR:
+		wrefresh(sensor_win);
 		break;
 	}
-
-	refresh();
 }
 
 void show_header(int selectedwindow)
diff --git a/powerdebug.c b/powerdebug.c
index 94dd31a..af8d28c 100644
--- a/powerdebug.c
+++ b/powerdebug.c
@@ -215,7 +215,7 @@  int keystroke_callback(bool *enter_hit, bool *findparent_ncurses,
 	keychar = toupper(keystroke);
 //#define DEBUG
 #ifdef DEBUG
-	killall_windows(1); fini_curses();
+	fini_curses();
 	printf("key entered %d:%c\n", keystroke, keychar);
 	exit(1);
 #endif