Use the new UIFC WIN_LEFTKEY/RIGHTKEY mode flags to enable indicators

A visual clue that there was a new navigation method available on some menus (where left/right arrow keys cycle through configured item) was needed. This seems to work nicely.

src/sbbs3/scfg/scfgmsg.c

@@ -674,7 +674,12 @@ void msgs_cfg()
 				"The left and right arrow keys may be used to cycle through message\n"
 				"groups.\n"
 			;
-			switch(uifc.list(WIN_ACT|WIN_T2B|WIN_EXTKEYS,6,0,60,&dflt,0,str,opt)) {
+			uifc_winmode_t wmode = WIN_ACT|WIN_T2B|WIN_EXTKEYS;
+			if(grpnum > 0)
+				wmode |= WIN_LEFTKEY;
+			if(grpnum + 1 < cfg.total_grps)
+				wmode |= WIN_RIGHTKEY;
+			switch(uifc.list(wmode,6,0,60,&dflt,0,str,opt)) {
 				case -1:
 					done=1;
 					break;

src/sbbs3/scfg/scfgsub.c

@@ -402,16 +402,22 @@ void sub_cfg(uint grpnum)
 				"\n"
 				"The left and right arrow keys may be used to cycle through sub-boards.\n"
 			;
-			switch(uifc.list(WIN_ACT|WIN_SAV|WIN_BOT|WIN_L2R|WIN_EXTKEYS
-				,0,0,72,&opt_dflt,0,str,opt)) {
+			uifc_winmode_t wmode = WIN_ACT|WIN_SAV|WIN_BOT|WIN_L2R|WIN_EXTKEYS;
+			int prev = prev_subnum(cfg.sub[i]);
+			int next = next_subnum(cfg.sub[i]);
+			if(prev != i)
+				wmode |= WIN_LEFTKEY;
+			if(next != i)
+				wmode |= WIN_RIGHTKEY;
+			switch(uifc.list(wmode,0,0,72,&opt_dflt,0,str,opt)) {
 				case -1:
 					done=1;
 					break;
 				case -CIO_KEY_LEFT-2:
-					i = prev_subnum(cfg.sub[i]);
+					i = prev;
 					break;
 				case -CIO_KEY_RIGHT-2:
-					i = next_subnum(cfg.sub[i]);
+					i = next;
 					break;
 				case 0:
 					uifc.helpbuf=sub_long_name_help;

src/sbbs3/scfg/scfgxfr2.c

@@ -439,7 +439,12 @@ void xfer_cfg()
 				"The left and right arrow keys may be used to cycle through file\n"
 				"libraries.\n"
 			;
-			switch(uifc.list(WIN_ACT|WIN_EXTKEYS,6,4,60,&dflt,0,str,opt)) {
+			uifc_winmode_t wmode = WIN_ACT|WIN_EXTKEYS;
+			if(libnum > 0)
+				wmode |= WIN_LEFTKEY;
+			if(libnum + 1 < cfg.total_libs)
+				wmode |= WIN_RIGHTKEY;
+			switch(uifc.list(wmode,6,4,60,&dflt,0,str,opt)) {
 				case -1:
 					done=1;
 					break;
@@ -1275,16 +1280,22 @@ void dir_cfg(uint libnum)
 				"The left and right arrow keys may be used to cycle through file\n"
 				"directories.\n"
 			;
-			switch(uifc.list(WIN_SAV|WIN_ACT|WIN_L2R|WIN_BOT|WIN_EXTKEYS
-				,0,0,72,&opt_dflt,0,str,opt)) {
+			uifc_winmode_t wmode = WIN_SAV|WIN_ACT|WIN_L2R|WIN_BOT|WIN_EXTKEYS;
+			int prev = prev_dirnum(cfg.dir[i]);
+			int next = next_dirnum(cfg.dir[i]);
+			if(prev != i)
+				wmode |= WIN_LEFTKEY;
+			if(next != i)
+				wmode |= WIN_RIGHTKEY;
+			switch(uifc.list(wmode,0,0,72,&opt_dflt,0,str,opt)) {
 				case -1:
 					done=1;
 					break;
 				case -CIO_KEY_LEFT-2:
-					i = prev_dirnum(cfg.dir[i]);
+					i = prev;
 					break;
 				case -CIO_KEY_RIGHT-2:
-					i = next_dirnum(cfg.dir[i]);
+					i = next;
 					break;
 				case 0:
 					uifc.helpbuf=dir_long_name_help;

src/sbbs3/scfg/scfgxtrn.c

@@ -1224,16 +1224,23 @@ void xtrn_cfg(uint section)
 				"\n"
 				"The left and right arrow keys may be used to cycle through programs.\n"
 			;
-			switch(uifc.list(WIN_SAV|WIN_ACT|WIN_MID|WIN_EXTKEYS,0,0,60,&opt_dflt,&sub_bar,cfg.xtrn[i]->name
+			uifc_winmode_t wmode = WIN_SAV|WIN_ACT|WIN_MID|WIN_EXTKEYS;
+			int prev = prev_program(i);
+			int next = next_program(i);
+			if(prev != i)
+				wmode |= WIN_LEFTKEY;
+			if(next != i)
+				wmode |= WIN_RIGHTKEY;
+			switch(uifc.list(wmode,0,0,60,&opt_dflt,&sub_bar,cfg.xtrn[i]->name
 				,opt)) {
 				case -1:
 					done=1;
 					break;
 				case -CIO_KEY_LEFT-2:
-					i = prev_program(i);
+					i = prev;
 					break;
 				case -CIO_KEY_RIGHT-2:
-					i = next_program(i);
+					i = next;
 					break;
 				case 0:
 					uifc.helpbuf=
@@ -2421,7 +2428,12 @@ void xtrnsec_cfg()
 				"The left and right arrow keys may be used to cycle through program\n"
 				"sections.\n"
 			;
-			switch(uifc.list(WIN_SAV|WIN_ACT|WIN_MID|WIN_EXTKEYS,0,0,60,&xtrnsec_opt,0,str
+			uifc_winmode_t wmode = WIN_SAV|WIN_ACT|WIN_MID|WIN_EXTKEYS;
+			if(i > 0)
+				wmode |= WIN_LEFTKEY;
+			if(i + 1 < cfg.total_xtrnsecs)
+				wmode |= WIN_RIGHTKEY;
+			switch(uifc.list(wmode,0,0,60,&xtrnsec_opt,0,str
 				,opt)) {
 				case -1:
 					done=1;