this->SetWidgetsHiddenState(true,

									RVW_WIDGET_TRAIN_ENGINEWAGON_TOGGLE,

									RVW_WIDGET_TRAIN_FLUFF_LEFT,

									RVW_WIDGET_TRAIN_RAILTYPE_DROPDOWN,

									RVW_WIDGET_TRAIN_FLUFF_RIGHT,

									RVW_WIDGET_TRAIN_WAGONREMOVE_TOGGLE,

									WIDGET_LIST_END);

		}

		ResizeWindow(this, 0, this->resize.step_height * this->vscroll.cap);

		/* Set the minimum window size to the current window size */

		this->resize.width  = this->width;

		this->resize.height = this->height;

		this->caption_color = _local_company;

		this->sel_group = id_g;

		this->vscroll2.cap = this->vscroll.cap;   // these two are always the same

		this->FindWindowPlacementAndResize(desc);

	}

	virtual void OnPaint()

	{

		if (this->update_left || this->update_right) this->GenerateLists();

		Company *c = GetCompany(_local_company);

		EngineID selected_id[2];

		const GroupID selected_group = this->sel_group;

		selected_id[0] = this->sel_engine[0];

		selected_id[1] = this->sel_engine[1];

		/* Disable the "Start Replacing" button if:

		 *    Either list is empty

		 * or The selected replacement engine has a replacement (to prevent loops)

		 * or The right list (new replacement) has the existing replacement vehicle selected */

		this->SetWidgetDisabledState(RVW_WIDGET_START_REPLACE,

										selected_id[0] == INVALID_ENGINE ||

										selected_id[1] == INVALID_ENGINE ||

										EngineReplacementForCompany(c, selected_id[1], selected_group) != INVALID_ENGINE ||

										EngineReplacementForCompany(c, selected_id[0], selected_group) == selected_id[1]);

		/* Disable the "Stop Replacing" button if:

		 *   The left list (existing vehicle) is empty

		 *   or The selected vehicle has no replacement set up */

		this->SetWidgetDisabledState(RVW_WIDGET_STOP_REPLACE,

										selected_id[0] == INVALID_ENGINE ||

										!EngineHasReplacementForCompany(c, selected_id[0], selected_group));

		/* now the actual drawing of the window itself takes place */

		if (this->window_number == VEH_TRAIN) {

			/* set on/off for renew_keep_length */

			SetDParam(1, c->renew_keep_length ? STR_CONFIG_PATCHES_ON : STR_CONFIG_PATCHES_OFF);

			/* set wagon/engine button */

			SetDParam(2, this->wagon_btnstate ? STR_ENGINES : STR_WAGONS);

			/* sets the colour of that art thing */

			this->widget[RVW_WIDGET_TRAIN_FLUFF_LEFT].color  = _company_colours[_local_company];

			this->widget[RVW_WIDGET_TRAIN_FLUFF_RIGHT].color = _company_colours[_local_company];

		}

		if (this->window_number == VEH_TRAIN) {

			/* Show the selected railtype in the pulldown menu */

			const RailtypeInfo *rti = GetRailTypeInfo(sel_railtype);

			this->widget[RVW_WIDGET_TRAIN_RAILTYPE_DROPDOWN].data = rti->strings.replace_text;

		}

		this->DrawWidgets();

		/* sets up the string for the vehicle that is being replaced to */

		if (selected_id[0] != INVALID_ENGINE) {

			if (!EngineHasReplacementForCompany(c, selected_id[0], selected_group)) {

STR_018B_CLOSE_WINDOW                                           :{BLACK}Close window

STR_018C_WINDOW_TITLE_DRAG_THIS                                 :{BLACK}Window title - drag this to move window

STR_STICKY_BUTTON                                               :{BLACK}Mark this window as uncloseable by the 'Close All Windows' key

STR_RESIZE_BUTTON                                               :{BLACK}Click and drag to resize this window

STR_SAVELOAD_HOME_BUTTON                                        :{BLACK}Click here to jump to the current default save/load directory

STR_018D_DEMOLISH_BUILDINGS_ETC                                 :{BLACK}Demolish buildings etc. on a square of land

STR_018E_LOWER_A_CORNER_OF_LAND                                 :{BLACK}Lower a corner of land

STR_018F_RAISE_A_CORNER_OF_LAND                                 :{BLACK}Raise a corner of land

STR_0190_SCROLL_BAR_SCROLLS_LIST                                :{BLACK}Scroll bar - scrolls list up/down

STR_HSCROLL_BAR_SCROLLS_LIST                                    :{BLACK}Scroll bar - scrolls list left/right

STR_0191_SHOW_LAND_CONTOURS_ON_MAP                              :{BLACK}Show land contours on map

STR_0192_SHOW_VEHICLES_ON_MAP                                   :{BLACK}Show vehicles on map

STR_0193_SHOW_INDUSTRIES_ON_MAP                                 :{BLACK}Show industries on map

STR_0194_SHOW_TRANSPORT_ROUTES_ON                               :{BLACK}Show transport routes on map

STR_0195_SHOW_VEGETATION_ON_MAP                                 :{BLACK}Show vegetation on map

STR_0196_SHOW_LAND_OWNERS_ON_MAP                                :{BLACK}Show land owners on map

STR_0197_TOGGLE_TOWN_NAMES_ON_OFF                               :{BLACK}Toggle town names on/off on map

STR_0198_PROFIT_THIS_YEAR_LAST_YEAR                             :{TINYFONT}{BLACK}Profit this year: {CURRENCY} (last year: {CURRENCY})

############ range for service numbers starts

STR_AGE                                                         :{COMMA} year{P "" s} ({COMMA})

STR_AGE_RED                                                     :{RED}{COMMA} year{P "" s} ({COMMA})

############ range for service numbers ends

STR_019C_ROAD_VEHICLE                                           :Road vehicle

STR_019D_AIRCRAFT                                               :Aircraft

STR_01A0_IS_GETTING_OLD                                         :{WHITE}{VEHICLE} is getting old

STR_01A1_IS_GETTING_VERY_OLD                                    :{WHITE}{VEHICLE} is getting very old

STR_01A2_IS_GETTING_VERY_OLD_AND                                :{WHITE}{VEHICLE} is getting very old and urgently needs replacing

STR_01A3_LAND_AREA_INFORMATION                                  :{WHITE}Land Area Information

STR_01A4_COST_TO_CLEAR_N_A                                      :{BLACK}Cost to clear: {LTBLUE}N/A

STR_01A5_COST_TO_CLEAR                                          :{BLACK}Cost to clear: {RED}{CURRENCY}

STR_REVENUE_WHEN_CLEARED                                        :{BLACK}Revenue when cleared: {LTBLUE}{CURRENCY}

STR_01A6_N_A                                                    :N/A

STR_01A7_OWNER                                                  :{BLACK}Owner: {LTBLUE}{STRING1}

STR_ROAD_OWNER                                                  :{BLACK}Road owner: {LTBLUE}{STRING1}

STR_TRAM_OWNER                                                  :{BLACK}Tramway owner: {LTBLUE}{STRING1}

STR_RAIL_OWNER                                                  :{BLACK}Railroad owner: {LTBLUE}{STRING1}

STR_01A8_LOCAL_AUTHORITY                                        :{BLACK}Local authority: {LTBLUE}{STRING1}

STR_01A9_NONE                                                   :None

STR_01AA_NAME                                                   :{BLACK}Name

STR_01AB                                                        :{BLACK}{TINYFONT}{VEHICLE}

############ range for days starts

STR_01AC_1ST                                                    :1st

STR_01AD_2ND                                                    :2nd

STR_01AE_3RD                                                    :3rd

STR_01AF_4TH                                                    :4th

STR_01B0_5TH                                                    :5th

STR_01B1_6TH                                                    :6th