Error  14  error LNK2005: "private: static float const Mouse::WEIGHT_MODIFIER" (?WEIGHT_MODIFIER@Mouse@@0MB) already defined in D3DApp.obj  Main.obj  iWin32SX10
Error  15  fatal error LNK1169: one or more multiply defined symbols found  C:\Users\davide\Desktop\iWin32SX10\Debug\iWin32SX10.exe  1  iWin32SX10