1 #include <Windows.h>
 2 #include <stdio.h>
 3
 4 BOOL GetDiskSpaceInfo(LPCSTR pszDrive)
 5 {
 6     DWORD64 qwFreeBytesToCaller, qwTotalBytes, qwFreeBytes;
 7     DWORD dwSectPerClust, dwBytesPerSect, dwFreeClusters, dwTotalClusters;
 8     BOOL bResult;
 9
10     bResult = GetDiskFreeSpaceEx (pszDrive,
11         (PULARGE_INTEGER)&qwFreeBytesToCaller,
12         (PULARGE_INTEGER)&qwTotalBytes,
13         (PULARGE_INTEGER)&qwFreeBytes);
14     if(bResult)
15     {
16         printf("Use GetDiskFreeSpaceEX get disk space information\n");
17         printf("availiable Free space(byte):\t%I64d\n",qwFreeBytesToCaller);
18         printf("FreeBytes(byte):\t\t%I64d\n",qwFreeBytes);
19         printf("Total space(byte):\t\t%I64d\n",qwTotalBytes);
20     }
21     bResult = GetDiskFreeSpace (pszDrive,
22         &dwSectPerClust,
23         &dwBytesPerSect,
24         &dwFreeClusters,
25         &dwTotalClusters);
26     if(bResult)
27     {
28         printf("\nUser GetDiskFreeSpace get disk space information\n");
29         printf("Free cluseters :\t\t\t%d\n",dwFreeClusters);
30         printf("Total cluseters :\t\t\t%d\n",dwTotalClusters);
31         printf("Sector per Cluster :\t\t\t%d\n",dwSectPerClust);
32         printf("Bytes per Sector:\t\t\t%d\n",dwBytesPerSect);
33         printf("FreeBytes(byte):\t\t%I64d\n",
34             (DWORD64)dwFreeClusters*
35             (DWORD64)dwSectPerClust*(DWORD64)dwBytesPerSect);
36         printf("Total space(byte):\t\t%I64d\n",
37             (DWORD64)dwTotalClusters*
38             (DWORD64)dwSectPerClust*(DWORD64)dwBytesPerSect);
39     }
40     return bResult;
41 }
42
43 int main(int argc, PCHAR argv[])
44 {
45     GetDiskSpaceInfo(argv[1]);
46 }