RtlUnicodeStringToAnsiSize macro (wdm.h)
The RtlUnicodeStringToAnsiSize routine returns the number of bytes required for a null-terminated ANSI string that is equivalent to a specified Unicode string.
Syntax
void RtlUnicodeStringToAnsiSize(
[in] STRING
);
Parameters
[in] STRING
Pointer to the Unicode string for which to compute the number of bytes required for an equivalent null-terminated ANSI string.
Return value
None
Remarks
If the Unicode string can be translated into an ANSI string using the current system locale information, RtlUnicodeStringToAnsiSize returns the number of bytes required for an equivalent null-terminated ANSI string. Otherwise, RtlUnicodeStringToAnsiSize returns zero.
The Unicode string is interpreted for the current system locale.
RtlUnicodeStringToAnsiSize performs the same operation as RtlxUnicodeStringToAnsiSize, but executes faster if the system does not use multibyte code pages.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of Windows. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | PASSIVE_LEVEL |