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Showing content from https://learn.microsoft.com/en-us/windows/win32/api/FileAPI/nf-fileapi-getfileinformationbyhandle below:

GetFileInformationByHandle function (fileapi.h) - Win32 apps

Retrieves file information for the specified file.

For a more advanced version of this function, see GetFileInformationByHandleEx.

To set file information using a file handle, see SetFileInformationByHandle.

BOOL GetFileInformationByHandle(
  [in]  HANDLE                       hFile,
  [out] LPBY_HANDLE_FILE_INFORMATION lpFileInformation
);

[in] hFile

A handle to the file that contains the information to be retrieved.

This handle should not be a pipe handle.

[out] lpFileInformation

A pointer to a BY_HANDLE_FILE_INFORMATION structure that receives the file information.

If the function succeeds, the return value is nonzero and file information data is contained in the buffer pointed to by the lpFileInformation parameter.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Depending on the underlying network features of the operating system and the type of server connected to, the GetFileInformationByHandle function may fail, return partial information, or full information for the given file.

You can compare the VolumeSerialNumber and FileIndex members returned in the BY_HANDLE_FILE_INFORMATION structure to determine if two paths map to the same target; for example, you can compare two file paths and determine if they map to the same directory.

IIn Windows 8 and Windows Server 2012, this function is supported by the following technologies.

If there is a transaction bound to the thread at the time of the call, then the function returns the compressed file size of the isolated file view. For more information, see

.

File Management Functions

GetFileInformationByHandleEx

SetFileInformationByHandle

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