RtlxUnicodeStringToAnsiSize function (wdm.h)
The RtlxUnicodeStringToAnsiSize routine returns the number of bytes required for a null-terminated ANSI string that is equivalent to a specified Unicode string.
C++
NTSYSAPI ULONG RtlxUnicodeStringToAnsiSize(
[in] PCUNICODE_STRING UnicodeString
);
[in] UnicodeString
Pointer to the Unicode string for which to compute the number of bytes required for an equivalent null-terminated ANSI string.
If the Unicode string can be translated into an ANSI string using the current system locale information, RtlxUnicodeStringToAnsiSize returns the number of bytes required for an equivalent null-terminated ANSI string. Otherwise, it returns zero.
The Unicode string is interpreted for the current system locale.
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | PASSIVE_LEVEL |