# HG changeset patch
# User frosch <frosch@openttd.org>
# Date 2013-06-30 14:32:31
# Node ID d54715c529f7e628da00ce05349c0578d79f5e36
# Parent  07e5ca9435213db381be9179b512526763be3be0

(svn r25531) -Codechange: Use separate function to set data of WWT_MATRIX widgets.

diff --git a/src/ai/ai_gui.cpp b/src/ai/ai_gui.cpp
--- a/src/ai/ai_gui.cpp
+++ b/src/ai/ai_gui.cpp
@@ -244,7 +244,7 @@ static const NWidgetPart _nested_ai_list
 		NWidget(WWT_DEFSIZEBOX, COLOUR_MAUVE),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIL_LIST), SetMinimalSize(188, 112), SetFill(1, 1), SetResize(1, 1), SetDataTip(0x501, STR_AI_LIST_TOOLTIP), SetScrollbar(WID_AIL_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIL_LIST), SetMinimalSize(188, 112), SetFill(1, 1), SetResize(1, 1), SetMatrixDataTip(1, 5, STR_AI_LIST_TOOLTIP), SetScrollbar(WID_AIL_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_MAUVE, WID_AIL_SCROLLBAR),
 	EndContainer(),
 	NWidget(WWT_PANEL, COLOUR_MAUVE, WID_AIL_INFO_BG), SetMinimalTextLines(8, WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM), SetResize(1, 0),
@@ -593,7 +593,7 @@ static const NWidgetPart _nested_ai_sett
 		NWidget(WWT_DEFSIZEBOX, COLOUR_MAUVE),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIS_BACKGROUND), SetMinimalSize(188, 182), SetResize(1, 1), SetFill(1, 0), SetDataTip(0x501, STR_NULL), SetScrollbar(WID_AIS_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIS_BACKGROUND), SetMinimalSize(188, 182), SetResize(1, 1), SetFill(1, 0), SetMatrixDataTip(1, 5, STR_NULL), SetScrollbar(WID_AIS_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_MAUVE, WID_AIS_SCROLLBAR),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
@@ -677,13 +677,13 @@ static const NWidgetPart _nested_ai_conf
 		EndContainer(),
 		NWidget(WWT_FRAME, COLOUR_MAUVE), SetDataTip(STR_AI_CONFIG_AI, STR_NULL), SetPadding(0, 5, 0, 5),
 			NWidget(NWID_HORIZONTAL),
-				NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIC_LIST), SetMinimalSize(288, 112), SetFill(1, 0), SetDataTip(0x801, STR_AI_CONFIG_AILIST_TOOLTIP), SetScrollbar(WID_AIC_SCROLLBAR),
+				NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIC_LIST), SetMinimalSize(288, 112), SetFill(1, 0), SetMatrixDataTip(1, 8, STR_AI_CONFIG_AILIST_TOOLTIP), SetScrollbar(WID_AIC_SCROLLBAR),
 				NWidget(NWID_VSCROLLBAR, COLOUR_MAUVE, WID_AIC_SCROLLBAR),
 			EndContainer(),
 		EndContainer(),
 		NWidget(NWID_SPACER), SetMinimalSize(0, 9),
 		NWidget(WWT_FRAME, COLOUR_MAUVE), SetDataTip(STR_AI_CONFIG_GAMESCRIPT, STR_NULL), SetPadding(0, 5, 4, 5),
-			NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIC_GAMELIST), SetMinimalSize(288, 14), SetFill(1, 0), SetDataTip(0x101, STR_AI_CONFIG_GAMELIST_TOOLTIP),
+			NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_AIC_GAMELIST), SetMinimalSize(288, 14), SetFill(1, 0), SetMatrixDataTip(1, 1, STR_AI_CONFIG_GAMELIST_TOOLTIP),
 		EndContainer(),
 		NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(7, 0, 7),
 			NWidget(WWT_PUSHTXTBTN, COLOUR_YELLOW, WID_AIC_CHANGE), SetFill(1, 0), SetMinimalSize(93, 12), SetDataTip(STR_AI_CONFIG_CHANGE, STR_AI_CONFIG_CHANGE_TOOLTIP),
diff --git a/src/airport_gui.cpp b/src/airport_gui.cpp
--- a/src/airport_gui.cpp
+++ b/src/airport_gui.cpp
@@ -525,7 +525,7 @@ static const NWidgetPart _nested_build_a
 		NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_AIRPORT_CLASS_LABEL, STR_NULL), SetFill(1, 0),
 		NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_AP_CLASS_DROPDOWN), SetFill(1, 0), SetDataTip(STR_BLACK_STRING, STR_STATION_BUILD_AIRPORT_TOOLTIP),
 		NWidget(NWID_HORIZONTAL),
-			NWidget(WWT_MATRIX, COLOUR_GREY, WID_AP_AIRPORT_LIST), SetFill(1, 0), SetDataTip(0x501, STR_STATION_BUILD_AIRPORT_TOOLTIP), SetScrollbar(WID_AP_SCROLLBAR),
+			NWidget(WWT_MATRIX, COLOUR_GREY, WID_AP_AIRPORT_LIST), SetFill(1, 0), SetMatrixDataTip(1, 5, STR_STATION_BUILD_AIRPORT_TOOLTIP), SetScrollbar(WID_AP_SCROLLBAR),
 			NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_AP_SCROLLBAR),
 		EndContainer(),
 		NWidget(NWID_HORIZONTAL),
diff --git a/src/autoreplace_gui.cpp b/src/autoreplace_gui.cpp
--- a/src/autoreplace_gui.cpp
+++ b/src/autoreplace_gui.cpp
@@ -539,9 +539,9 @@ static const NWidgetPart _nested_replace
 		NWidget(WWT_STICKYBOX, COLOUR_GREY),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
-		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_LEFT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_LEFT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_LEFT_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_LEFT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetMatrixDataTip(1, 0, STR_REPLACE_HELP_LEFT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_LEFT_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_LEFT_SCROLLBAR),
-		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_RIGHT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_RIGHT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_RIGHT_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_RIGHT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetMatrixDataTip(1, 0, STR_REPLACE_HELP_RIGHT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_RIGHT_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_RIGHT_SCROLLBAR),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
@@ -580,9 +580,9 @@ static const NWidgetPart _nested_replace
 		NWidget(WWT_STICKYBOX, COLOUR_GREY),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
-		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_LEFT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_LEFT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_LEFT_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_LEFT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetMatrixDataTip(1, 0, STR_REPLACE_HELP_LEFT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_LEFT_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_LEFT_SCROLLBAR),
-		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_RIGHT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetDataTip(0x1, STR_REPLACE_HELP_RIGHT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_RIGHT_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_GREY, WID_RV_RIGHT_MATRIX), SetMinimalSize(216, 0), SetFill(1, 1), SetMatrixDataTip(1, 0, STR_REPLACE_HELP_RIGHT_ARRAY), SetResize(1, 1), SetScrollbar(WID_RV_RIGHT_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_RV_RIGHT_SCROLLBAR),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
diff --git a/src/bridge_gui.cpp b/src/bridge_gui.cpp
--- a/src/bridge_gui.cpp
+++ b/src/bridge_gui.cpp
@@ -340,7 +340,7 @@ static const NWidgetPart _nested_build_b
 				NWidget(WWT_DROPDOWN, COLOUR_DARK_GREEN, WID_BBS_DROPDOWN_CRITERIA), SetFill(1, 0), SetDataTip(0x0, STR_TOOLTIP_SORT_CRITERIA),
 			EndContainer(),
 			/* Matrix. */
-			NWidget(WWT_MATRIX, COLOUR_DARK_GREEN, WID_BBS_BRIDGE_LIST), SetFill(1, 0), SetResize(0, 22), SetDataTip(0x401, STR_SELECT_BRIDGE_SELECTION_TOOLTIP), SetScrollbar(WID_BBS_SCROLLBAR),
+			NWidget(WWT_MATRIX, COLOUR_DARK_GREEN, WID_BBS_BRIDGE_LIST), SetFill(1, 0), SetResize(0, 22), SetMatrixDataTip(1, 4, STR_SELECT_BRIDGE_SELECTION_TOOLTIP), SetScrollbar(WID_BBS_SCROLLBAR),
 		EndContainer(),
 
 		/* scrollbar + resize button */
diff --git a/src/build_vehicle_gui.cpp b/src/build_vehicle_gui.cpp
--- a/src/build_vehicle_gui.cpp
+++ b/src/build_vehicle_gui.cpp
@@ -69,7 +69,7 @@ static const NWidgetPart _nested_build_v
 	EndContainer(),
 	/* Vehicle list. */
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_GREY, WID_BV_LIST), SetResize(1, 1), SetFill(1, 0), SetDataTip(0x101, STR_NULL), SetScrollbar(WID_BV_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_GREY, WID_BV_LIST), SetResize(1, 1), SetFill(1, 0), SetMatrixDataTip(1, 1, STR_NULL), SetScrollbar(WID_BV_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BV_SCROLLBAR),
 	EndContainer(),
 	/* Panel with details. */
diff --git a/src/company_gui.cpp b/src/company_gui.cpp
--- a/src/company_gui.cpp
+++ b/src/company_gui.cpp
@@ -838,7 +838,7 @@ static const NWidgetPart _nested_select_
 		NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_SCL_SEC_COL_DROPDOWN), SetMinimalSize(125, 12), SetFill(0, 1),
 				SetDataTip(STR_BLACK_STRING, STR_LIVERY_SECONDARY_TOOLTIP),
 	EndContainer(),
-	NWidget(WWT_MATRIX, COLOUR_GREY, WID_SCL_MATRIX), SetMinimalSize(275, 15), SetFill(1, 0), SetDataTip((1 << MAT_ROW_START) | (1 << MAT_COL_START), STR_LIVERY_PANEL_TOOLTIP),
+	NWidget(WWT_MATRIX, COLOUR_GREY, WID_SCL_MATRIX), SetMinimalSize(275, 15), SetFill(1, 0), SetMatrixDataTip(1, 1, STR_LIVERY_PANEL_TOOLTIP),
 };
 
 static WindowDesc _select_company_livery_desc(
diff --git a/src/depot_gui.cpp b/src/depot_gui.cpp
--- a/src/depot_gui.cpp
+++ b/src/depot_gui.cpp
@@ -50,7 +50,7 @@ static const NWidgetPart _nested_train_d
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
 		NWidget(NWID_VERTICAL),
-			NWidget(WWT_MATRIX, COLOUR_GREY, WID_D_MATRIX), SetDataTip(0x0, STR_NULL), SetResize(1, 1), SetScrollbar(WID_D_V_SCROLL),
+			NWidget(WWT_MATRIX, COLOUR_GREY, WID_D_MATRIX), SetResize(1, 1), SetScrollbar(WID_D_V_SCROLL),
 			NWidget(NWID_SELECTION, INVALID_COLOUR, WID_D_SHOW_H_SCROLL),
 				NWidget(NWID_HSCROLLBAR, COLOUR_GREY, WID_D_H_SCROLL),
 			EndContainer(),
diff --git a/src/group_gui.cpp b/src/group_gui.cpp
--- a/src/group_gui.cpp
+++ b/src/group_gui.cpp
@@ -47,7 +47,7 @@ static const NWidgetPart _nested_group_w
 			NWidget(WWT_PANEL, COLOUR_GREY, WID_GL_ALL_VEHICLES), SetFill(1, 0), EndContainer(),
 			NWidget(WWT_PANEL, COLOUR_GREY, WID_GL_DEFAULT_VEHICLES), SetFill(1, 0), EndContainer(),
 			NWidget(NWID_HORIZONTAL),
-				NWidget(WWT_MATRIX, COLOUR_GREY, WID_GL_LIST_GROUP), SetDataTip(0x701, STR_GROUPS_CLICK_ON_GROUP_FOR_TOOLTIP),
+				NWidget(WWT_MATRIX, COLOUR_GREY, WID_GL_LIST_GROUP), SetMatrixDataTip(1, 7, STR_GROUPS_CLICK_ON_GROUP_FOR_TOOLTIP),
 						SetFill(1, 0), SetResize(0, 1), SetScrollbar(WID_GL_LIST_GROUP_SCROLLBAR),
 				NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_GL_LIST_GROUP_SCROLLBAR),
 			EndContainer(),
@@ -71,7 +71,7 @@ static const NWidgetPart _nested_group_w
 				NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalSize(12, 12), SetResize(1, 0), EndContainer(),
 			EndContainer(),
 			NWidget(NWID_HORIZONTAL),
-				NWidget(WWT_MATRIX, COLOUR_GREY, WID_GL_LIST_VEHICLE), SetMinimalSize(248, 0), SetDataTip(0x701, STR_NULL), SetResize(1, 1), SetFill(1, 0), SetScrollbar(WID_GL_LIST_VEHICLE_SCROLLBAR),
+				NWidget(WWT_MATRIX, COLOUR_GREY, WID_GL_LIST_VEHICLE), SetMinimalSize(248, 0), SetMatrixDataTip(1, 7, STR_NULL), SetResize(1, 1), SetFill(1, 0), SetScrollbar(WID_GL_LIST_VEHICLE_SCROLLBAR),
 				NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_GL_LIST_VEHICLE_SCROLLBAR),
 			EndContainer(),
 			NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalSize(1, 0), SetFill(1, 1), SetResize(1, 0), EndContainer(),
diff --git a/src/industry_gui.cpp b/src/industry_gui.cpp
--- a/src/industry_gui.cpp
+++ b/src/industry_gui.cpp
@@ -174,7 +174,7 @@ static const NWidgetPart _nested_build_i
 		NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_DARK_GREEN, WID_DPI_MATRIX_WIDGET), SetDataTip(0x801, STR_FUND_INDUSTRY_SELECTION_TOOLTIP), SetFill(1, 0), SetResize(1, 1), SetScrollbar(WID_DPI_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_DARK_GREEN, WID_DPI_MATRIX_WIDGET), SetMatrixDataTip(1, 8, STR_FUND_INDUSTRY_SELECTION_TOOLTIP), SetFill(1, 0), SetResize(1, 1), SetScrollbar(WID_DPI_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_DPI_SCROLLBAR),
 	EndContainer(),
 	NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_DPI_INFOPANEL), SetResize(1, 0),
diff --git a/src/network/network_content_gui.cpp b/src/network/network_content_gui.cpp
--- a/src/network/network_content_gui.cpp
+++ b/src/network/network_content_gui.cpp
@@ -983,7 +983,7 @@ static const NWidgetPart _nested_network
 							NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_NAME), SetResize(1, 0), SetFill(1, 0),
 											SetDataTip(STR_CONTENT_NAME_CAPTION, STR_CONTENT_NAME_CAPTION_TOOLTIP),
 						EndContainer(),
-						NWidget(WWT_MATRIX, COLOUR_LIGHT_BLUE, WID_NCL_MATRIX), SetResize(1, 14), SetFill(1, 1), SetScrollbar(WID_NCL_SCROLLBAR), SetDataTip(STR_NULL, STR_CONTENT_MATRIX_TOOLTIP),
+						NWidget(WWT_MATRIX, COLOUR_LIGHT_BLUE, WID_NCL_MATRIX), SetResize(1, 14), SetFill(1, 1), SetScrollbar(WID_NCL_SCROLLBAR), SetMatrixDataTip(0, 0, STR_CONTENT_MATRIX_TOOLTIP),
 					EndContainer(),
 					NWidget(NWID_VSCROLLBAR, COLOUR_LIGHT_BLUE, WID_NCL_SCROLLBAR),
 				EndContainer(),
diff --git a/src/network/network_gui.cpp b/src/network/network_gui.cpp
--- a/src/network/network_gui.cpp
+++ b/src/network/network_gui.cpp
@@ -946,7 +946,7 @@ static const NWidgetPart _nested_network
 						NWidget(NWID_VERTICAL),
 							NWidgetFunction(MakeResizableHeader),
 							NWidget(WWT_MATRIX, COLOUR_LIGHT_BLUE, WID_NG_MATRIX), SetResize(1, 1), SetFill(1, 0),
-												SetDataTip(0, STR_NETWORK_SERVER_LIST_CLICK_GAME_TO_SELECT), SetScrollbar(WID_NG_SCROLLBAR),
+												SetMatrixDataTip(0, 0, STR_NETWORK_SERVER_LIST_CLICK_GAME_TO_SELECT), SetScrollbar(WID_NG_SCROLLBAR),
 						EndContainer(),
 						NWidget(NWID_VSCROLLBAR, COLOUR_LIGHT_BLUE, WID_NG_SCROLLBAR),
 					EndContainer(),
@@ -1589,7 +1589,7 @@ static const NWidgetPart _nested_network
 			/* Company list. */
 			NWidget(NWID_VERTICAL),
 				NWidget(WWT_PANEL, COLOUR_WHITE, WID_NL_HEADER), SetMinimalSize(146, 0), SetResize(1, 0), SetFill(1, 0), EndContainer(),
-				NWidget(WWT_MATRIX, COLOUR_LIGHT_BLUE, WID_NL_MATRIX), SetMinimalSize(146, 0), SetResize(1, 1), SetFill(1, 1), SetDataTip(0, STR_NETWORK_GAME_LOBBY_COMPANY_LIST_TOOLTIP), SetScrollbar(WID_NL_SCROLLBAR),
+				NWidget(WWT_MATRIX, COLOUR_LIGHT_BLUE, WID_NL_MATRIX), SetMinimalSize(146, 0), SetResize(1, 1), SetFill(1, 1), SetMatrixDataTip(0, 0, STR_NETWORK_GAME_LOBBY_COMPANY_LIST_TOOLTIP), SetScrollbar(WID_NL_SCROLLBAR),
 			EndContainer(),
 			NWidget(NWID_VSCROLLBAR, COLOUR_LIGHT_BLUE, WID_NL_SCROLLBAR),
 			NWidget(NWID_SPACER), SetMinimalSize(5, 0), SetResize(0, 1),
diff --git a/src/newgrf_debug_gui.cpp b/src/newgrf_debug_gui.cpp
--- a/src/newgrf_debug_gui.cpp
+++ b/src/newgrf_debug_gui.cpp
@@ -865,7 +865,7 @@ static const NWidgetPart _nested_sprite_
 			NWidget(NWID_VERTICAL), SetPIP(10, 5, 10),
 				NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_SA_PICKER), SetDataTip(STR_SPRITE_ALIGNER_PICKER_BUTTON, STR_SPRITE_ALIGNER_PICKER_TOOLTIP), SetFill(1, 0),
 				NWidget(NWID_HORIZONTAL),
-					NWidget(WWT_MATRIX, COLOUR_GREY, WID_SA_LIST), SetResize(1, 1), SetDataTip(0x101, STR_NULL), SetFill(1, 1), SetScrollbar(WID_SA_SCROLLBAR),
+					NWidget(WWT_MATRIX, COLOUR_GREY, WID_SA_LIST), SetResize(1, 1), SetMatrixDataTip(1, 1, STR_NULL), SetFill(1, 1), SetScrollbar(WID_SA_SCROLLBAR),
 					NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_SA_SCROLLBAR),
 				EndContainer(),
 			EndContainer(),
diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -512,7 +512,7 @@ static const NWidgetPart _nested_newgrf_
 		EndContainer(),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_NP_BACKGROUND), SetMinimalSize(188, 182), SetResize(1, 1), SetFill(1, 0), SetDataTip(0x501, STR_NULL), SetScrollbar(WID_NP_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_MAUVE, WID_NP_BACKGROUND), SetMinimalSize(188, 182), SetResize(1, 1), SetFill(1, 0), SetMatrixDataTip(1, 5, STR_NULL), SetScrollbar(WID_NP_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_MAUVE, WID_NP_SCROLLBAR),
 	EndContainer(),
 	NWidget(NWID_SELECTION, INVALID_COLOUR, WID_NP_SHOW_DESCRIPTION),
diff --git a/src/object_gui.cpp b/src/object_gui.cpp
--- a/src/object_gui.cpp
+++ b/src/object_gui.cpp
@@ -457,7 +457,7 @@ static const NWidgetPart _nested_build_o
 		NWidget(NWID_HORIZONTAL), SetPadding(2, 0, 0, 0),
 			NWidget(NWID_VERTICAL),
 				NWidget(NWID_HORIZONTAL), SetPadding(0, 5, 2, 5),
-					NWidget(WWT_MATRIX, COLOUR_GREY, WID_BO_CLASS_LIST), SetFill(1, 0), SetDataTip(0x501, STR_OBJECT_BUILD_CLASS_TOOLTIP), SetScrollbar(WID_BO_SCROLLBAR),
+					NWidget(WWT_MATRIX, COLOUR_GREY, WID_BO_CLASS_LIST), SetFill(1, 0), SetMatrixDataTip(1, 5, STR_OBJECT_BUILD_CLASS_TOOLTIP), SetScrollbar(WID_BO_SCROLLBAR),
 					NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BO_SCROLLBAR),
 				EndContainer(),
 				NWidget(NWID_HORIZONTAL), SetPadding(0, 5, 0, 5),
diff --git a/src/rail_gui.cpp b/src/rail_gui.cpp
--- a/src/rail_gui.cpp
+++ b/src/rail_gui.cpp
@@ -1356,7 +1356,7 @@ static const NWidgetPart _nested_station
 				NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_ADDITIONS),
 					NWidget(NWID_HORIZONTAL), SetPIP(7, 0, 7), SetPadding(2, 0, 1, 0),
 						NWidget(WWT_MATRIX, COLOUR_GREY, WID_BRAS_NEWST_LIST), SetMinimalSize(122, 71), SetFill(1, 0),
-								SetDataTip(0x501, STR_STATION_BUILD_STATION_CLASS_TOOLTIP), SetScrollbar(WID_BRAS_NEWST_SCROLL),
+								SetMatrixDataTip(1, 5, STR_STATION_BUILD_STATION_CLASS_TOOLTIP), SetScrollbar(WID_BRAS_NEWST_SCROLL),
 						NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BRAS_NEWST_SCROLL),
 					EndContainer(),
 				EndContainer(),
diff --git a/src/vehicle_gui.cpp b/src/vehicle_gui.cpp
--- a/src/vehicle_gui.cpp
+++ b/src/vehicle_gui.cpp
@@ -990,7 +990,7 @@ static const NWidgetPart _nested_vehicle
 	NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_VR_SELECT_HEADER), SetDataTip(STR_REFIT_TITLE, STR_NULL), SetResize(1, 0),
 	/* Matrix + scrollbar. */
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_GREY, WID_VR_MATRIX), SetMinimalSize(228, 112), SetResize(1, 14), SetFill(1, 1), SetDataTip(0x801, STR_NULL), SetScrollbar(WID_VR_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_GREY, WID_VR_MATRIX), SetMinimalSize(228, 112), SetResize(1, 14), SetFill(1, 1), SetMatrixDataTip(1, 8, STR_NULL), SetScrollbar(WID_VR_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_VR_SCROLLBAR),
 	EndContainer(),
 	NWidget(WWT_PANEL, COLOUR_GREY, WID_VR_INFO), SetMinimalTextLines(2, WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM), SetResize(1, 0), EndContainer(),
@@ -1794,7 +1794,7 @@ static const NWidgetPart _nested_train_v
 	EndContainer(),
 	NWidget(WWT_PANEL, COLOUR_GREY, WID_VD_TOP_DETAILS), SetResize(1, 0), SetMinimalSize(405, 42), EndContainer(),
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_MATRIX, COLOUR_GREY, WID_VD_MATRIX), SetResize(1, 1), SetMinimalSize(393, 45), SetDataTip(0x701, STR_NULL), SetFill(1, 0), SetScrollbar(WID_VD_SCROLLBAR),
+		NWidget(WWT_MATRIX, COLOUR_GREY, WID_VD_MATRIX), SetResize(1, 1), SetMinimalSize(393, 45), SetMatrixDataTip(1, 7, STR_NULL), SetFill(1, 0), SetScrollbar(WID_VD_SCROLLBAR),
 		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_VD_SCROLLBAR),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
diff --git a/src/widget_type.h b/src/widget_type.h
--- a/src/widget_type.h
+++ b/src/widget_type.h
@@ -1021,6 +1021,18 @@ static inline NWidgetPart SetDataTip(uin
 }
 
 /**
+ * Widget part function for setting the data and tooltip of WWT_MATRIX widgets
+ * @param cols Number of columns.
+ * @param rows Number of rows.
+ * @param tip  Tooltip of the widget.
+ * @ingroup NestedWidgetParts
+ */
+static inline NWidgetPart SetMatrixDataTip(uint8 cols, uint8 rows, StringID tip)
+{
+	return SetDataTip((rows << MAT_ROW_START) | (cols << MAT_COL_START), tip);
+}
+
+/**
  * Widget part function for setting additional space around a widget.
  * Parameters start above the widget, and are specified in clock-wise direction.
  * @param top The padding above the widget.