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GetDiskFreeSpaceEx.md

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Function name : GetDiskFreeSpaceEx

Group: File System - Library: kernel32

Retrieves information about the amount of space available on a disk volume: the total amount of space, the total amount of free space, and the total amount of free space available to the user associated with the calling thread.

Code examples:

DiskFreeSpace class

Declaration:

BOOL GetDiskFreeSpaceEx(
  LPCTSTR lpDirectoryName,                 // directory name
  PULARGE_INTEGER lpFreeBytesAvailable,    // bytes available to caller
  PULARGE_INTEGER lpTotalNumberOfBytes,    // bytes on disk
  PULARGE_INTEGER lpTotalNumberOfFreeBytes // free bytes on disk
);

FoxPro declaration:

DECLARE SHORT GetDiskFreeSpaceEx IN kernel32;
	STRING   lpDirectoryName,;
	STRING @ lpFreeBytesAvailable,;
	STRING @ lpTotalNumberOfBytes,;
	STRING @ lpTotalNumberOfFreeBytes

Parameters:

lpDirectoryName [in] Pointer to a null-terminated string that specifies a directory on the disk of interest.

lpFreeBytesAvailable [out] Pointer to a variable that receives the total number of free bytes on the disk that are available to the user associated with the calling thread.

lpTotalNumberOfBytes [out] Pointer to a variable that receives the total number of bytes on the disk that are available to the user associated with the calling thread.

lpTotalNumberOfFreeBytes [out] Pointer to a variable that receives the total number of free bytes on the disk.

Return value:

If the function succeeds, the return value is nonzero.

Comments:

Before VFP version 7 this function returns more accurate results for large devices comparing to native SYS(2020) and DiskSpace()