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NF:fileapi.GetFileSizeEx | GetFileSizeEx function (fileapi.h) | Retrieves the size of the specified file. |
| fs\getfilesizeex.htm | fs | 782457bc-8f37-4eec-8ff3-b148fd0a7345 | 12/05/2018 | GetFileSizeEx, GetFileSizeEx function [Files], _win32_getfilesizeex, base.getfilesizeex, fileapi/GetFileSizeEx, fs.getfilesizeex, winbase/GetFileSizeEx | fileapi.h | Windows.h | Windows | Windows XP [desktop apps \| UWP apps] | Windows Server 2003 [desktop apps \| UWP apps] | Kernel32.lib | Kernel32.dll | Windows | 19H1 |
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Retrieves the size of the specified file.
A handle to the file. The handle must have been created with the FILE_READ_ATTRIBUTES access right or equivalent, or the caller must have sufficient permission on the directory that contains the file. For more information, see File Security and Access Rights.
A pointer to a LARGE_INTEGER structure that receives the file size, in bytes.
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Transacted Operations: If there is a transaction bound to the file handle, then the function returns information for the isolated file view.
Windows Store apps: GetFileSizeEx is not supported. Use GetFileInformationByHandleEx.
In Windows 8 and Windows Server 2012, this function is supported by the following technologies.
| Technology | Supported |
|---|---|
| Server Message Block (SMB) 3.0 protocol | Yes |
| SMB 3.0 Transparent Failover (TFO) | Yes |
| SMB 3.0 with Scale-out File Shares (SO) | Yes |
| Cluster Shared Volume File System (CsvFS) | Yes |
| Resilient File System (ReFS) | Yes |
