AreFileApisANSI function (fileapi.h)
Determines whether the file I/O functions are using the ANSI or OEM character set code page. This function is useful for 8-bit console input and output operations.
Syntax
BOOL AreFileApisANSI();
Return value
If the set of file I/O functions is using the ANSI code page, the return value is nonzero.
If the set of file I/O functions is using the OEM code page, the return value is zero.
Remarks
The SetFileApisToOEM function causes a set of file I/O functions to use the OEM code page. The SetFileApisToANSI function causes the same set of file I/O functions to use the ANSI code page. Use the AreFileApisANSI function to determine which code page the set of file I/O functions is currently using. For a discussion of these functions' usage, please see the Remarks sections of SetFileApisToOEM and SetFileApisToANSI.
The file I/O functions whose code page is ascertained by AreFileApisANSI are those functions exported by KERNEL32.DLL that accept or return a file name.
The functions SetFileApisToOEM and SetFileApisToANSI set the code page for a process, so AreFileApisANSI returns a value indicating the code page of an entire process.
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 |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | fileapi.h (include Windows.h, WinBase.h) |
| Library | Kernel32.lib |
| DLL | Kernel32.dll |