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-rw-r--r--src/engine_gui.h16
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diff --git a/src/engine_gui.h b/src/engine_gui.h
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+++ b/src/engine_gui.h
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+/* $Id$ */
+
+/** @file engine_gui.h Engine GUI functions, used by build_vehicle_gui and autoreplace_gui */
+
+#ifndef ENGINE_GUI_H
+#define ENGINE_GUI_H
+
+#include <vector>
+
+typedef std::vector<EngineID> EngineList;
+
+typedef int CDECL EngList_SortTypeFunction(const void*, const void*); ///< argument type for EngList_Sort()
+void EngList_Sort(EngineList *el, EngList_SortTypeFunction compare); ///< qsort of the engine list
+void EngList_SortPartial(EngineList *el, EngList_SortTypeFunction compare, uint begin, uint num_items); ///< qsort of specified portion of the engine list
+
+#endif /* ENGINE_GUI_H */