Fix: Allow NewGRF inspection of road tiles. (#11323)

This avoids use of C-style pointers and memset.

src/bootstrap_gui.cpp

@@ -239,7 +239,7 @@ public:
 
 	void DrawWidget(const Rect &r, int widget) const override
 	{
-		if (widget != 0) return;
+		if (widget != WID_BAFD_QUESTION) return;
 
 		DrawStringMultiLine(r.Shrink(WidgetDimensions::scaled.frametext), STR_MISSING_GRAPHICS_SET_MESSAGE, TC_FROMSTRING, SA_CENTER);
 	}

src/game/game_gui.cpp

@@ -314,7 +314,7 @@ struct GSConfigWindow : public Window {
 								list.emplace_back(new DropDownListStringItem(config_item.labels.find(i)->second, i, false));
 							}
 
-							ShowDropDownListAt(this, std::move(list), old_val, -1, wi_rect, COLOUR_ORANGE);
+							ShowDropDownListAt(this, std::move(list), old_val, WID_GSC_SETTING_DROPDOWN, wi_rect, COLOUR_ORANGE);
 						}
 					}
 				} else if (IsInsideMM(x, 0, SETTING_BUTTON_WIDTH)) {
@@ -367,14 +367,14 @@ struct GSConfigWindow : public Window {
 
 	void OnDropdownSelect(int widget, int index) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_GSC_SETTING_DROPDOWN) return;
 		assert(this->clicked_dropdown);
 		SetValue(index);
 	}
 
 	void OnDropdownClose(Point, int widget, int, bool) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_GSC_SETTING_DROPDOWN) return;
 		/* We cannot raise the dropdown button just yet. OnClick needs some hint, whether
 		 * the same dropdown button was clicked again, and then not open the dropdown again.
 		 * So, we only remember that it was closed, and process it on the next OnPaint, which is

src/lang/danish.txt

@@ -523,6 +523,7 @@ STR_NEWS_MENU_DELETE_ALL_MESSAGES                               :Slet alle beske
 # About menu
 ###length 11
 STR_ABOUT_MENU_LAND_BLOCK_INFO                                  :Landområde information
+STR_ABOUT_MENU_HELP                                             :Hjælp & manualer
 STR_ABOUT_MENU_SEPARATOR                                        :
 STR_ABOUT_MENU_TOGGLE_CONSOLE                                   :Tænd/Sluk konsol
 STR_ABOUT_MENU_AI_DEBUG                                         :Computerspiller/spilscript debug
@@ -2124,6 +2125,7 @@ STR_INTRO_MULTIPLAYER                                           :{BLACK}Netværk
 
 STR_INTRO_GAME_OPTIONS                                          :{BLACK}Opsætning
 STR_INTRO_HIGHSCORE                                             :{BLACK} Topresultater
+STR_INTRO_HELP                                                  :{BLACK}Hjælp og manualer
 STR_INTRO_CONFIG_SETTINGS_TREE                                  :{BLACK}Indstillinger
 STR_INTRO_NEWGRF_SETTINGS                                       :{BLACK}NewGRF indstillinger
 STR_INTRO_ONLINE_CONTENT                                        :{BLACK}Tjek Online Indhold
@@ -2145,6 +2147,7 @@ STR_INTRO_TOOLTIP_TOYLAND_LANDSCAPE                             :{BLACK}Vælg 'l
 
 STR_INTRO_TOOLTIP_GAME_OPTIONS                                  :{BLACK}Sæt spillet op
 STR_INTRO_TOOLTIP_HIGHSCORE                                     :{BLACK}Hvis topscoreliste
+STR_INTRO_TOOLTIP_HELP                                          :{BLACK}Få adgang til dokumentation og online ressourcer
 STR_INTRO_TOOLTIP_CONFIG_SETTINGS_TREE                          :{BLACK}Skærm indstillinger
 STR_INTRO_TOOLTIP_NEWGRF_SETTINGS                               :{BLACK}Vis NewGRF-indstillinger
 STR_INTRO_TOOLTIP_ONLINE_CONTENT                                :{BLACK}Tjek for nyt og opdateret indhold til download
@@ -2167,6 +2170,17 @@ STR_ABANDON_GAME_QUERY                                          :{YELLOW}Er du s
 STR_ABANDON_SCENARIO_QUERY                                      :{YELLOW}Er du sikker på, at du vil afslutte dette scenarie ?
 
 # Help window
+STR_HELP_WINDOW_CAPTION                                         :{WHITE}Hjælp og manualer
+STR_HELP_WINDOW_WEBSITES                                        :{BLACK}Hjemmesider
+STR_HELP_WINDOW_DOCUMENTS                                       :{BLACK}Dokumenter
+STR_HELP_WINDOW_README                                          :{BLACK}Læs mig
+STR_HELP_WINDOW_CHANGELOG                                       :{BLACK}Ændringslog
+STR_HELP_WINDOW_KNOWN_BUGS                                      :{BLACK}Kendte Bugs
+STR_HELP_WINDOW_LICENSE                                         :{BLACK}Licens
+STR_HELP_WINDOW_MAIN_WEBSITE                                    :{BLACK}OpenTTD
+STR_HELP_WINDOW_MANUAL_WIKI                                     :{BLACK}Manual / Wiki
+STR_HELP_WINDOW_BUGTRACKER                                      :{BLACK}Anmeld en fejl
+STR_HELP_WINDOW_COMMUNITY                                       :{BLACK}Fællesskab
 
 # Cheat window
 STR_CHEATS                                                      :{WHITE}Snydefunktioner
@@ -4701,6 +4715,11 @@ STR_AI_SETTINGS_SETTING                                         :{STRING}: {ORAN
 
 
 # Textfile window
+STR_TEXTFILE_JUMPLIST                                           :{WHITE}Indholdsfortegnelse
+STR_TEXTFILE_JUMPLIST_TOOLTIP                                   :{BLACK}Spring hurtigt til en sektion i den viste fil via denne liste
+STR_TEXTFILE_JUMPLIST_ITEM                                      :{WHITE}{STRING}
+STR_TEXTFILE_NAVBACK_TOOLTIP                                    :{BLACK}Gå tilbage i navigationshistorikken
+STR_TEXTFILE_NAVFORWARD_TOOLTIP                                 :{BLACK}Vend tilbage i navigationshistorikken
 STR_TEXTFILE_WRAP_TEXT                                          :{WHITE}Ombryd tekst
 STR_TEXTFILE_WRAP_TEXT_TOOLTIP                                  :{BLACK}Ombryd teksten i vinduet, så det hele passer uden at skulle rulle
 STR_TEXTFILE_VIEW_README                                        :{BLACK}Se readme
@@ -4711,6 +4730,7 @@ STR_TEXTFILE_README_CAPTION                                     :{WHITE}{STRING}
 STR_TEXTFILE_CHANGELOG_CAPTION                                  :{WHITE}{STRING} ændringslog for {STRING}
 STR_TEXTFILE_LICENCE_CAPTION                                    :{WHITE}{STRING} licens for {STRING}
 STR_TEXTFILE_SURVEY_RESULT_CAPTION                              :Forhåndsvisning af undersøgelsesresultat
+STR_TEXTFILE_GAME_MANUAL_CAPTION                                :{WHITE}OpenTTD dokument '{STRING}'
 
 
 # Vehicle loading indicators

src/lang/english.txt

@@ -3400,6 +3400,7 @@ STR_NEWGRF_INSPECT_PARENT_TOOLTIP                               :{BLACK}Inspect
 STR_NEWGRF_INSPECT_CAPTION_OBJECT_AT                            :{STRING1} at {HEX}
 STR_NEWGRF_INSPECT_CAPTION_OBJECT_AT_OBJECT                     :Object
 STR_NEWGRF_INSPECT_CAPTION_OBJECT_AT_RAIL_TYPE                  :Rail type
+STR_NEWGRF_INSPECT_CAPTION_OBJECT_AT_ROAD_TYPE                  :Road type
 
 STR_NEWGRF_INSPECT_QUERY_CAPTION                                :{WHITE}NewGRF variable 60+x parameter (hexadecimal)
 

src/newgrf_debug_gui.cpp

@@ -775,7 +775,7 @@ GrfSpecFeature GetGrfSpecFeature(TileIndex tile)
 	switch (GetTileType(tile)) {
 		default:              return GSF_INVALID;
 		case MP_RAILWAY:      return GSF_RAILTYPES;
-		case MP_ROAD:         return IsLevelCrossing(tile) ? GSF_RAILTYPES : GSF_INVALID;
+		case MP_ROAD:         return IsLevelCrossing(tile) ? GSF_RAILTYPES : GSF_ROADTYPES;
 		case MP_HOUSE:        return GSF_HOUSES;
 		case MP_INDUSTRY:     return GSF_INDUSTRYTILES;
 		case MP_OBJECT:       return GSF_OBJECTS;

src/newgrf_gui.cpp

@@ -395,7 +395,7 @@ struct NewGRFParametersWindow : public Window {
 								list.emplace_back(new DropDownListStringItem(GetGRFStringFromGRFText(par_info.value_names.find(i)->second), i, false));
 							}
 
-							ShowDropDownListAt(this, std::move(list), old_val, -1, wi_rect, COLOUR_ORANGE);
+							ShowDropDownListAt(this, std::move(list), old_val, WID_NP_SETTING_DROPDOWN, wi_rect, COLOUR_ORANGE);
 						}
 					}
 				} else if (IsInsideMM(x, 0, SETTING_BUTTON_WIDTH)) {
@@ -453,7 +453,7 @@ struct NewGRFParametersWindow : public Window {
 
 	void OnDropdownSelect(int widget, int index) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_NP_SETTING_DROPDOWN) return;
 		assert(this->clicked_dropdown);
 		GRFParameterInfo &par_info = this->GetParameterInfo(this->clicked_row);
 		par_info.SetValue(this->grf_config, index);
@@ -462,7 +462,7 @@ struct NewGRFParametersWindow : public Window {
 
 	void OnDropdownClose(Point, int widget, int, bool) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_NP_SETTING_DROPDOWN) return;
 		/* We cannot raise the dropdown button just yet. OnClick needs some hint, whether
 		 * the same dropdown button was clicked again, and then not open the dropdown again.
 		 * So, we only remember that it was closed, and process it on the next OnPaint, which is
@@ -1171,7 +1171,7 @@ struct NewGRFWindow : public Window, NewGRFScanCallback {
 
 	void OnDropdownSelect(int widget, int index) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_NS_PRESET_LIST) return;
 		if (!this->editable) return;
 
 		ClearGRFConfigList(&this->actives);

src/screenshot_gui.cpp

@@ -29,10 +29,9 @@ struct ScreenshotWindow : Window {
 
 	void OnClick([[maybe_unused]] Point pt, int widget, [[maybe_unused]] int click_count) override
 	{
-		if (widget < 0) return;
 		ScreenshotType st;
 		switch (widget) {
-			default:
+			default: return;
 			case WID_SC_TAKE:             st = SC_VIEWPORT;    break;
 			case WID_SC_TAKE_ZOOMIN:      st = SC_ZOOMEDIN;    break;
 			case WID_SC_TAKE_DEFAULTZOOM: st = SC_DEFAULTZOOM; break;

src/script/script_gui.cpp

@@ -472,7 +472,7 @@ struct ScriptSettingsWindow : public Window {
 								list.emplace_back(new DropDownListStringItem(config_item.labels.find(i)->second, i, false));
 							}
 
-							ShowDropDownListAt(this, std::move(list), old_val, -1, wi_rect, COLOUR_ORANGE);
+							ShowDropDownListAt(this, std::move(list), old_val, WID_SCRS_SETTING_DROPDOWN, wi_rect, COLOUR_ORANGE);
 						}
 					}
 				} else if (IsInsideMM(x, 0, SETTING_BUTTON_WIDTH)) {
@@ -526,14 +526,14 @@ struct ScriptSettingsWindow : public Window {
 
 	void OnDropdownSelect(int widget, int index) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_SCRS_SETTING_DROPDOWN) return;
 		assert(this->clicked_dropdown);
 		SetValue(index);
 	}
 
 	void OnDropdownClose(Point, int widget, int, bool) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_SCRS_SETTING_DROPDOWN) return;
 		/* We cannot raise the dropdown button just yet. OnClick needs some hint, whether
 		 * the same dropdown button was clicked again, and then not open the dropdown again.
 		 * So, we only remember that it was closed, and process it on the next OnPaint, which is

src/settings_gui.cpp

@@ -2394,7 +2394,7 @@ struct GameSettingsWindow : Window {
 						list.emplace_back(new DropDownListStringItem(sd->str_val + i - sd->min, i, false));
 					}
 
-					ShowDropDownListAt(this, std::move(list), value, -1, wi_rect, COLOUR_ORANGE);
+					ShowDropDownListAt(this, std::move(list), value, WID_GS_SETTING_DROPDOWN, wi_rect, COLOUR_ORANGE);
 				}
 			}
 			this->SetDirty();
@@ -2526,23 +2526,21 @@ struct GameSettingsWindow : Window {
 				this->InvalidateData();
 				break;
 
-			default:
-				if (widget < 0) {
-					/* Deal with drop down boxes on the panel. */
-					assert(this->valuedropdown_entry != nullptr);
-					const IntSettingDesc *sd = this->valuedropdown_entry->setting;
-					assert(sd->flags & SF_GUI_DROPDOWN);
+			case WID_GS_SETTING_DROPDOWN:
+				/* Deal with drop down boxes on the panel. */
+				assert(this->valuedropdown_entry != nullptr);
+				const IntSettingDesc *sd = this->valuedropdown_entry->setting;
+				assert(sd->flags & SF_GUI_DROPDOWN);
 
-					SetSettingValue(sd, index);
-					this->SetDirty();
-				}
+				SetSettingValue(sd, index);
+				this->SetDirty();
 				break;
 		}
 	}
 
 	void OnDropdownClose(Point pt, int widget, int index, bool instant_close) override
 	{
-		if (widget >= 0) {
+		if (widget != WID_GS_SETTING_DROPDOWN) {
 			/* Normally the default implementation of OnDropdownClose() takes care of
 			 * a few things. We want that behaviour here too, but only for
 			 * "normal" dropdown boxes. The special dropdown boxes added for every

src/station_cmd.cpp

@@ -67,6 +67,8 @@
 
 #include "table/strings.h"
 
+#include <bitset>
+
 #include "safeguards.h"
 
 /**
@@ -216,7 +218,7 @@ enum StationNaming {
 /** Information to handle station action 0 property 24 correctly */
 struct StationNameInformation {
 	uint32_t free_names; ///< Current bitset of free names (we can remove names).
-	bool *indtypes;    ///< Array of bools telling whether an industry type has been found.
+	std::bitset<NUM_INDUSTRYTYPES> indtypes; ///< Bit set indicating when an industry type has been found.
 };
 
 /**
@@ -255,21 +257,20 @@ static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming n
 	};
 
 	const Town *t = st->town;
-	uint32_t free_names = UINT32_MAX;
 
-	bool indtypes[NUM_INDUSTRYTYPES];
-	memset(indtypes, 0, sizeof(indtypes));
+	StationNameInformation sni{};
+	sni.free_names = UINT32_MAX;
 
 	for (const Station *s : Station::Iterate()) {
 		if (s != st && s->town == t) {
 			if (s->indtype != IT_INVALID) {
-				indtypes[s->indtype] = true;
+				sni.indtypes[s->indtype] = true;
 				StringID name = GetIndustrySpec(s->indtype)->station_name;
 				if (name != STR_UNDEFINED) {
 					/* Filter for other industrytypes with the same name */
 					for (IndustryType it = 0; it < NUM_INDUSTRYTYPES; it++) {
 						const IndustrySpec *indsp = GetIndustrySpec(it);
-						if (indsp->enabled && indsp->station_name == name) indtypes[it] = true;
+						if (indsp->enabled && indsp->station_name == name) sni.indtypes[it] = true;
 					}
 				}
 				continue;
@@ -279,13 +280,12 @@ static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming n
 				if (str == M(STR_SV_STNAME_FOREST)) {
 					str = M(STR_SV_STNAME_WOODS);
 				}
-				ClrBit(free_names, str);
+				ClrBit(sni.free_names, str);
 			}
 		}
 	}
 
 	TileIndex indtile = tile;
-	StationNameInformation sni = { free_names, indtypes };
 	if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
 		/* An industry has been found nearby */
 		IndustryType indtype = GetIndustryType(indtile);
@@ -298,14 +298,13 @@ static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming n
 	}
 
 	/* Oil rigs/mines name could be marked not free by looking for a near by industry. */
-	free_names = sni.free_names;
 
 	/* check default names */
-	uint32_t tmp = free_names & _gen_station_name_bits[name_class];
+	uint32_t tmp = sni.free_names & _gen_station_name_bits[name_class];
 	if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
 
 	/* check mine? */
-	if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
+	if (HasBit(sni.free_names, M(STR_SV_STNAME_MINES))) {
 		if (CountMapSquareAround(tile, CMSAMine) >= 2) {
 			return STR_SV_STNAME_MINES;
 		}
@@ -313,20 +312,20 @@ static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming n
 
 	/* check close enough to town to get central as name? */
 	if (DistanceMax(tile, t->xy) < 8) {
-		if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
+		if (HasBit(sni.free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
 
-		if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
+		if (HasBit(sni.free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
 	}
 
 	/* Check lakeside */
-	if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
+	if (HasBit(sni.free_names, M(STR_SV_STNAME_LAKESIDE)) &&
 			DistanceFromEdge(tile) < 20 &&
 			CountMapSquareAround(tile, CMSAWater) >= 5) {
 		return STR_SV_STNAME_LAKESIDE;
 	}
 
 	/* Check woods */
-	if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
+	if (HasBit(sni.free_names, M(STR_SV_STNAME_WOODS)) && (
 				CountMapSquareAround(tile, CMSATree) >= 8 ||
 				CountMapSquareAround(tile, IsTileForestIndustry) >= 2)
 			) {
@@ -337,9 +336,9 @@ static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming n
 	int z = GetTileZ(tile);
 	int z2 = GetTileZ(t->xy);
 	if (z < z2) {
-		if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
+		if (HasBit(sni.free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
 	} else if (z > z2) {
-		if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
+		if (HasBit(sni.free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
 	}
 
 	/* check direction compared to town */
@@ -350,12 +349,28 @@ static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming n
 		~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
 	};
 
-	free_names &= _direction_and_table[
+	sni.free_names &= _direction_and_table[
 		(TileX(tile) < TileX(t->xy)) +
 		(TileY(tile) < TileY(t->xy)) * 2];
 
-	tmp = free_names & ((1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 6) | (1 << 7) | (1 << 12) | (1 << 26) | (1 << 27) | (1 << 28) | (1 << 29) | (1 << 30));
-	return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
+	/** Bitmask of remaining station names that can be used when a more specific name has not been used. */
+	static const uint32_t fallback_names = (
+		(1U << M(STR_SV_STNAME_NORTH)) |
+		(1U << M(STR_SV_STNAME_SOUTH)) |
+		(1U << M(STR_SV_STNAME_EAST)) |
+		(1U << M(STR_SV_STNAME_WEST)) |
+		(1U << M(STR_SV_STNAME_TRANSFER)) |
+		(1U << M(STR_SV_STNAME_HALT)) |
+		(1U << M(STR_SV_STNAME_EXCHANGE)) |
+		(1U << M(STR_SV_STNAME_ANNEXE)) |
+		(1U << M(STR_SV_STNAME_SIDINGS)) |
+		(1U << M(STR_SV_STNAME_BRANCH)) |
+		(1U << M(STR_SV_STNAME_UPPER)) |
+		(1U << M(STR_SV_STNAME_LOWER))
+	);
+
+	sni.free_names &= fallback_names;
+	return (sni.free_names == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(sni.free_names));
 }
 #undef M
 

src/table/newgrf_debug_data.h

@@ -533,7 +533,7 @@ static const NIVariable _niv_airports[] = {
 	NIV_END()
 };
 
-class NIHAiport : public NIHelper {
+class NIHAirport : public NIHelper {
 	bool IsInspectable(uint index) const override        { return AirportSpec::Get(Station::Get(index)->airport.type)->grf_prop.grffile != nullptr; }
 	uint GetParent(uint index) const override            { return GetInspectWindowNumber(GSF_FAKE_TOWNS, Station::Get(index)->town->index); }
 	const void *GetInstance(uint index)const override    { return Station::Get(index); }
@@ -562,7 +562,7 @@ static const NIFeature _nif_airport = {
 	nullptr,
 	nullptr,
 	_niv_airports,
-	new NIHAiport(),
+	new NIHAirport(),
 };
 
 
@@ -632,7 +632,7 @@ class NIHRoadType : public NIHelper {
 	uint GetParent(uint) const override                  { return UINT32_MAX; }
 	const void *GetInstance(uint) const override         { return nullptr; }
 	const void *GetSpec(uint) const override             { return nullptr; }
-	void SetStringParameters(uint index) const override  { this->SetObjectAtStringParameters(STR_NEWGRF_INSPECT_CAPTION_OBJECT_AT_RAIL_TYPE, INVALID_STRING_ID, index); }
+	void SetStringParameters(uint index) const override  { this->SetObjectAtStringParameters(STR_NEWGRF_INSPECT_CAPTION_OBJECT_AT_ROAD_TYPE, INVALID_STRING_ID, index); }
 	uint32_t GetGRFID(uint) const override               { return 0; }
 
 	uint Resolve(uint index, uint var, uint param, bool *avail) const override

src/widgets/game_widget.h

@@ -23,6 +23,8 @@ enum GSConfigWidgets {
 	WID_GSC_CONTENT_DOWNLOAD = WID_GSC_TEXTFILE + TFT_CONTENT_END, ///< Download content button.
 	WID_GSC_ACCEPT,           ///< Accept ("Close") button
 	WID_GSC_RESET,            ///< Reset button.
+
+	WID_GSC_SETTING_DROPDOWN = -1, ///< Dynamically created dropdown for changing setting value.
 };
 
 #endif /* WIDGETS_GS_WIDGET_H */

src/widgets/newgrf_widget.h

@@ -26,6 +26,8 @@ enum NewGRFParametersWidgets {
 	WID_NP_RESET,            ///< Reset button.
 	WID_NP_SHOW_DESCRIPTION, ///< #NWID_SELECTION to optionally display parameter descriptions.
 	WID_NP_DESCRIPTION,      ///< Multi-line description of a parameter.
+
+	WID_NP_SETTING_DROPDOWN = -1, ///< Dynamically created dropdown for changing setting value.
 };
 
 /** Widgets of the #NewGRFWindow class. */

src/widgets/script_widget.h

@@ -29,6 +29,8 @@ enum ScriptSettingsWidgets {
 	WID_SCRS_SCROLLBAR,  ///< Scrollbar to scroll through all settings.
 	WID_SCRS_ACCEPT,     ///< Accept button.
 	WID_SCRS_RESET,      ///< Reset button.
+
+	WID_SCRS_SETTING_DROPDOWN = -1, ///< Dynamically created dropdown for changing setting value.
 };
 
 /** Widgets of the #ScriptDebugWindow class. */

src/widgets/settings_widget.h

@@ -64,6 +64,8 @@ enum GameSettingsWidgets {
 	WID_GS_RESTRICT_TYPE,      ///< Label upfront to the type drop-down box to restrict the list of settings to show
 	WID_GS_RESTRICT_DROPDOWN,  ///< The drop down box to restrict the list of settings
 	WID_GS_TYPE_DROPDOWN,      ///< The drop down box to choose client/game/company/all settings
+
+	WID_GS_SETTING_DROPDOWN = -1, ///< Dynamically created dropdown for changing setting value.
 };
 
 /** Widgets of the #CustomCurrencyWindow class. */