(svn r26322) -Feature: Warn the user about empty setting search results too.

src/lang/english.txt

@@ -1089,6 +1089,7 @@ STR_CONFIG_SETTING_TYPE_DROPDOWN_COMPANY_INGAME                 :Company setting
 STR_CONFIG_SETTING_CATEGORY_HIDES                               :{BLACK}Show all search results by setting{}{SILVER}Category {BLACK}to {WHITE}{STRING}
 STR_CONFIG_SETTING_TYPE_HIDES                                   :{BLACK}Show all search results by setting{}{SILVER}Type {BLACK}to {WHITE}All setting types
 STR_CONFIG_SETTING_CATEGORY_AND_TYPE_HIDES                      :{BLACK}Show all search results by setting{}{SILVER}Category {BLACK}to {WHITE}{STRING} {BLACK}and {SILVER}Type {BLACK}to {WHITE}All setting types
+STR_CONFIG_SETTINGS_NONE                                        :{WHITE}- None -
 
 STR_CONFIG_SETTING_OFF                                          :Off
 STR_CONFIG_SETTING_ON                                           :On

src/settings_gui.cpp

@@ -1920,8 +1920,9 @@ struct GameSettingsWindow : Window {
 			case WID_GS_OPTIONSPANEL: {
 				int top_pos = r.top + SETTINGTREE_TOP_OFFSET + 1 + this->warn_lines * FONT_HEIGHT_NORMAL;
 				uint last_row = this->vscroll->GetPosition() + this->vscroll->GetCapacity() - this->warn_lines;
-				_settings_main_page.Draw(settings_ptr, r.left + SETTINGTREE_LEFT_OFFSET, r.right - SETTINGTREE_RIGHT_OFFSET, top_pos,
+				int next_row = _settings_main_page.Draw(settings_ptr, r.left + SETTINGTREE_LEFT_OFFSET, r.right - SETTINGTREE_RIGHT_OFFSET, top_pos,
 						this->vscroll->GetPosition(), last_row, this->last_clicked);
+				if (next_row == 0) DrawString(r.left + SETTINGTREE_LEFT_OFFSET, r.right - SETTINGTREE_RIGHT_OFFSET, top_pos, STR_CONFIG_SETTINGS_NONE);
 				break;
 			}