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Question

Performance Data Helper functions

Answer 1

//1.
BOOL GetDiskFreeSpace(
  LPCTSTR lpRootPathName,    // pointer to root path
  LPDWORD lpSectorsPerCluster,  // pointer to sectors per cluster
  LPDWORD lpBytesPerSector,  // pointer to bytes per sector
  LPDWORD lpNumberOfFreeClusters,
                             // pointer to number of free clusters
  LPDWORD lpTotalNumberOfClusters 
                             // pointer to total number of clusters
);
//2. 
BOOL GetDiskFreeSpaceEx(
  LPCTSTR lpDirectoryName,                 // pointer to the directory name
  PULARGE_INTEGER lpFreeBytesAvailableToCaller, // receives the number of bytes on
                                                // disk available to the caller
  PULARGE_INTEGER lpTotalNumberOfBytes,    // receives the number of bytes on disk
  PULARGE_INTEGER lpTotalNumberOfFreeBytes // receives the free bytes on disk
);