fileapi.h header
This header is used by multiple technologies. For more information, see:
fileapi.h contains the following programming interfaces:
Functions
| AreFileApisANSI Determines whether the file I/O functions are using the ANSI or OEM character set code page. |
| AreShortNamesEnabled The AreShortNamesEnabled function determines whether short names are enabled for the specified volume. |
| CompareFileTime Compares two file times. |
| CreateDirectoryA Creates a new directory. (CreateDirectoryA) |
| CreateDirectoryW Creates a new directory. (CreateDirectoryW) |
| CreateFile2 Creates or opens a file or I/O device. |
| CreateFileA Creates or opens a file or I/O device. The most commonly used I/O devices are as follows:_file, file stream, directory, physical disk, volume, console buffer, tape drive, communications resource, mailslot, and pipe. (ANSI) |
| CreateFileW Creates or opens a file or I/O device. The most commonly used I/O devices are as follows:_file, file stream, directory, physical disk, volume, console buffer, tape drive, communications resource, mailslot, and pipe. (Unicode) |
| DefineDosDeviceW Defines, redefines, or deletes MS-DOS device names. (DefineDosDeviceW) |
| DeleteFileA Deletes an existing file. (DeleteFileA) |
| DeleteFileW Deletes an existing file. (DeleteFileW) |
| DeleteVolumeMountPointW Deletes a drive letter or mounted folder. (DeleteVolumeMountPointW) |
| FileTimeToLocalFileTime Converts a file time to a local file time. |
| FindClose Closes a file search handle opened by the FindFirstFile, FindFirstFileEx, FindFirstFileNameW, FindFirstFileNameTransactedW, FindFirstFileTransacted, FindFirstStreamTransactedW, or FindFirstStreamW functions. |
| FindCloseChangeNotification Stops change notification handle monitoring. |
| FindFirstChangeNotificationA Creates a change notification handle and sets up initial change notification filter conditions. (ANSI) |
| FindFirstChangeNotificationW Creates a change notification handle and sets up initial change notification filter conditions. (Unicode) |
| FindFirstFileA Searches a directory for a file or subdirectory with a name that matches a specific name (or partial name if wildcards are used). (ANSI) |
| FindFirstFileExA Searches a directory for a file or subdirectory with a name and attributes that match those specified. (FindFirstFileExA) |
| FindFirstFileExW Searches a directory for a file or subdirectory with a name and attributes that match those specified. (FindFirstFileExW) |
| FindFirstFileNameW Creates an enumeration of all the hard links to the specified file. The FindFirstFileNameW function returns a handle to the enumeration that can be used on subsequent calls to the FindNextFileNameW function. |
| FindFirstFileW Searches a directory for a file or subdirectory with a name that matches a specific name (or partial name if wildcards are used). (Unicode) |
| FindFirstStreamW Enumerates the first stream with a ::$DATA stream type in the specified file or directory. |
| FindFirstVolumeW Retrieves the name of a volume on a computer. (FindFirstVolumeW) |
| FindNextChangeNotification Requests that the operating system signal a change notification handle the next time it detects an appropriate change. |
| FindNextFileA Continues a file search from a previous call to the FindFirstFile, FindFirstFileEx, or FindFirstFileTransacted functions. (ANSI) |
| FindNextFileNameW Continues enumerating the hard links to a file using the handle returned by a successful call to the FindFirstFileNameW function. |
| FindNextFileW Continues a file search from a previous call to the FindFirstFile, FindFirstFileEx, or FindFirstFileTransacted functions. (Unicode) |
| FindNextStreamW Continues a stream search started by a previous call to the FindFirstStreamW function. |
| FindNextVolumeW Continues a volume search started by a call to the FindFirstVolume function. (FindNextVolumeW) |
| FindVolumeClose Closes the specified volume search handle. |
| FlushFileBuffers Flushes the buffers of a specified file and causes all buffered data to be written to a file. |
| GetCompressedFileSizeA Retrieves the actual number of bytes of disk storage used to store a specified file. (ANSI) |
| GetCompressedFileSizeW Retrieves the actual number of bytes of disk storage used to store a specified file. (Unicode) |
| GetDiskFreeSpaceA Retrieves information about the specified disk, including the amount of free space on the disk. (ANSI) |
| GetDiskFreeSpaceExA Retrieves information about the amount of space that is available on a disk volume, which is the total amount of space, the total amount of free space, and the total amount of free space available to the user that is associated with the calling thread. (ANSI) |
| GetDiskFreeSpaceExW Retrieves information about the amount of space that is available on a disk volume, which is the total amount of space, the total amount of free space, and the total amount of free space available to the user that is associated with the calling thread. (Unicode) |
| GetDiskFreeSpaceW Retrieves information about the specified disk, including the amount of free space on the disk. (Unicode) |
| GetDiskSpaceInformationA Gets disk space information for a volume at a given root path. |
| GetDiskSpaceInformationW Gets disk space information for a volume at a given root path. |
| GetDriveTypeA Determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive. (ANSI) |
| GetDriveTypeW Determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive. (Unicode) |
| GetFileAttributesA Retrieves file system attributes for a specified file or directory. (ANSI) |
| GetFileAttributesExA Retrieves attributes for a specified file or directory. (ANSI) |
| GetFileAttributesExW Retrieves attributes for a specified file or directory. (Unicode) |
| GetFileAttributesW Retrieves file system attributes for a specified file or directory. (Unicode) |
| GetFileInformationByHandle Retrieves file information for the specified file. (GetFileInformationByHandle) |
| GetFileSize Retrieves the size of the specified file, in bytes. |
| GetFileSizeEx Retrieves the size of the specified file. |
| GetFileTime Retrieves the date and time that a file or directory was created, last accessed, and last modified. |
| GetFileType Retrieves the file type of the specified file. |
| GetFinalPathNameByHandleA Retrieves the final path for the specified file. (ANSI) |
| GetFinalPathNameByHandleW Retrieves the final path for the specified file. (Unicode) |
| GetFullPathNameA Retrieves the full path and file name of the specified file. (ANSI) |
| GetFullPathNameW Retrieves the full path and file name of the specified file. (Unicode) |
| GetLogicalDrives Retrieves a bitmask representing the currently available disk drives. |
| GetLogicalDriveStringsW Fills a buffer with strings that specify valid drives in the system. (GetLogicalDriveStringsW) |
| GetLongPathNameA Converts the specified path to its long form. (ANSI) |
| GetLongPathNameW Converts the specified path to its long form. (Unicode) |
| GetShortPathNameW Retrieves the short path form of the specified path. (GetShortPathNameW) |
| GetTempFileNameA Creates a name for a temporary file. If a unique file name is generated, an empty file is created and the handle to it is released; otherwise, only a file name is generated. (GetTempFileNameA) |
| GetTempFileNameW Creates a name for a temporary file. If a unique file name is generated, an empty file is created and the handle to it is released; otherwise, only a file name is generated. (GetTempFileNameW) |
| GetTempPath2A Retrieves the path of the directory designated for temporary files, based on the privileges of the calling process. (ANSI) |
| GetTempPath2W Retrieves the path of the directory designated for temporary files, based on the privileges of the calling process. (Unicode) |
| GetTempPathA Retrieves the path of the directory designated for temporary files. (ANSI) |
| GetTempPathW Retrieves the path of the directory designated for temporary files. (Unicode) |
| GetVolumeInformationA Retrieves information about the file system and volume associated with the specified root directory. (ANSI) |
| GetVolumeInformationByHandleW Retrieves information about the file system and volume associated with the specified file. |
| GetVolumeInformationW Retrieves information about the file system and volume associated with the specified root directory. (Unicode) |
| GetVolumeNameForVolumeMountPointW Retrieves a volume GUID path for the volume that is associated with the specified volume mount point ( drive letter, volume GUID path, or mounted folder). (GetVolumeNameForVolumeMountPointW) |
| GetVolumePathNamesForVolumeNameW Retrieves a list of drive letters and mounted folder paths for the specified volume. (GetVolumePathNamesForVolumeNameW) |
| GetVolumePathNameW Retrieves the volume mount point where the specified path is mounted. (GetVolumePathNameW) |
| LocalFileTimeToFileTime Converts a local file time to a file time based on the Coordinated Universal Time (UTC). |
| LockFile Locks the specified file for exclusive access by the calling process. |
| LockFileEx Locks the specified file for exclusive access by the calling process. This function can operate either synchronously or asynchronously and can request either an exclusive or a shared lock. |
| QueryDosDeviceW Retrieves information about MS-DOS device names. (QueryDosDeviceW) |
| ReadFile Reads data from the specified file or input/output (I/O) device. Reads occur at the position specified by the file pointer if supported by the device. |
| ReadFileEx Reads data from the specified file or input/output (I/O) device. It reports its completion status asynchronously, calling the specified completion routine when reading is completed or canceled and the calling thread is in an alertable wait state. |
| ReadFileScatter Reads data from a file and stores it in an array of buffers. |
| RemoveDirectoryA Deletes an existing empty directory. (ANSI) |
| RemoveDirectoryW Deletes an existing empty directory. (Unicode) |
| SetEndOfFile Sets the physical file size for the specified file to the current position of the file pointer. |
| SetFileApisToANSI Causes the file I/O functions to use the ANSI character set code page for the current process. |
| SetFileApisToOEM Causes the file I/O functions for the process to use the OEM character set code page. |
| SetFileAttributesA Sets the attributes for a file or directory. (ANSI) |
| SetFileAttributesW Sets the attributes for a file or directory. (Unicode) |
| SetFileInformationByHandle Sets the file information for the specified file. |
| SetFileIoOverlappedRange Associates a virtual address range with the specified file handle. |
| SetFilePointer Moves the file pointer of the specified file. (SetFilePointer) |
| SetFilePointerEx Moves the file pointer of the specified file. (SetFilePointerEx) |
| SetFileTime Sets the date and time that the specified file or directory was created, last accessed, or last modified. |
| SetFileValidData Sets the valid data length of the specified file. This function is useful in very limited scenarios. For more information, see the Remarks section. |
| UnlockFile Unlocks a region in an open file. |
| UnlockFileEx Unlocks a region in the specified file. This function can operate either synchronously or asynchronously. |
| WriteFile Writes data to the specified file or input/output (I/O) device. |
| WriteFileEx Writes data to the specified file or input/output (I/O) device. It reports its completion status asynchronously, calling the specified completion routine when writing is completed or canceled and the calling thread is in an alertable wait state. |
| WriteFileGather Retrieves data from an array of buffers and writes the data to a file. |
Structures
| BY_HANDLE_FILE_INFORMATION Contains information that the GetFileInformationByHandle function retrieves. |
| CREATEFILE2_EXTENDED_PARAMETERS Contains optional extended parameters for CreateFile2. |
| DISK_SPACE_INFORMATION The DISK_SPACE_INFORMATION structure contains information about the disk space for a particular volume. |
| WIN32_FILE_ATTRIBUTE_DATA Contains attribute information for a file or directory. |
| WIN32_FIND_STREAM_DATA Contains information about the stream found by the FindFirstStreamW or FindNextStreamW function. |
Enumerations
| STREAM_INFO_LEVELS Defines values that are used with the FindFirstStreamW function to specify the information level of the returned data. |