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diff --git a/Medley/src/base/UPlatformWindows.pas b/Medley/src/base/UPlatformWindows.pas
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+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit UPlatformWindows;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+// turn off messages for platform specific symbols
+{$WARN SYMBOL_PLATFORM OFF}
+
+uses
+  Classes,
+  UPlatform,
+  UPath;
+
+type
+  TPlatformWindows = class(TPlatform)
+    private
+      function GetSpecialPath(CSIDL: integer): IPath;
+    public
+      function TerminateIfAlreadyRunning(var WndTitle: String): Boolean; override;
+
+      function GetLogPath: IPath; override;
+      function GetGameSharedPath: IPath; override;
+      function GetGameUserPath: IPath; override;
+  end;
+
+implementation
+
+uses
+  SysUtils,
+  ShlObj,
+  Windows,
+  UConfig;
+
+//------------------------------
+//Start more than One Time Prevention
+//------------------------------
+function TPlatformWindows.TerminateIfAlreadyRunning(var WndTitle: String): Boolean;
+var
+  hWnd: THandle;
+  I: Integer;
+begin
+    Result := false;
+    hWnd:= FindWindow(nil, PChar(WndTitle));
+    //Programm already started
+    if (hWnd <> 0) then
+    begin
+      I := Messagebox(0, PChar('Another Instance of Ultrastar is already running. Continue ?'), PChar(WndTitle), MB_ICONWARNING or MB_YESNO);
+      if (I = IDYes) then
+      begin
+        I := 1;
+        repeat
+          Inc(I);
+          hWnd := FindWindow(nil, PChar(WndTitle + ' Instance ' + InttoStr(I)));
+        until (hWnd = 0);
+        WndTitle := WndTitle + ' Instance ' + InttoStr(I);
+      end
+      else
+        Result := true;
+    end;
+end;
+
+(**
+ * Returns the path of a special folder.
+ *
+ * Some Folder IDs:
+ * CSIDL_APPDATA       (e.g. C:\Documents and Settings\username\Application Data)
+ * CSIDL_LOCAL_APPDATA (e.g. C:\Documents and Settings\username\Local Settings\Application Data)
+ * CSIDL_PROFILE       (e.g. C:\Documents and Settings\username)
+ * CSIDL_PERSONAL      (e.g. C:\Documents and Settings\username\My Documents)
+ * CSIDL_MYMUSIC       (e.g. C:\Documents and Settings\username\My Documents\My Music)
+ *)
+function TPlatformWindows.GetSpecialPath(CSIDL: integer): IPath;
+var
+  Buffer: array [0..MAX_PATH-1] of WideChar;
+begin
+  if (SHGetSpecialFolderPathW(0, @Buffer, CSIDL, false)) then
+    Result := Path(Buffer)
+  else
+    Result := PATH_NONE;
+end;
+
+function TPlatformWindows.GetLogPath: IPath;
+begin
+  Result := GetExecutionDir();
+end;
+
+function TPlatformWindows.GetGameSharedPath: IPath;
+begin
+  Result := GetExecutionDir();
+end;
+
+function TPlatformWindows.GetGameUserPath: IPath;
+begin
+  //Result := GetSpecialPath(CSIDL_APPDATA).Append('UltraStarDX', pdAppend);
+  Result := GetExecutionDir();
+end;
+
+end.