CpuUsage.obj : error LNK2019: unresolved external symbol "public: int __thiscall CCpuUsage::EnablePerformaceCounters(int)" (?EnablePerformaceCounters@CCpuUsage@@QAEHH@Z) referenced in function "public: int __thiscall CCpuUsage::GetCpuUsage(unsigned long)" (?GetCpuUsage@CCpuUsage@@QAEHK@Z) .\Release/CpuUsage.exe : fatal error LNK1120: 1 unresolved externals |