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The RtlDowncaseUnicodeChar routine converts the specified Unicode character to lowercase.
Syntax
NTSYSAPI WCHAR RtlDowncaseUnicodeChar(
[in] WCHAR SourceCharacter
);
Parameters
[in] SourceCharacter
Specifies the character to convert.
Return value
RtlDowncaseUnicodeChar returns the lowercase value of the Unicode character.
Remarks
Ntoskrnl.lib supports the RtlDowncaseUnicodeChar routine in the WDK for Windows 7 and later versions of Windows. Ntdll.dll exports the RtlDowncaseUnicodeChar entry point in Windows XP and later versions of Windows.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows XP and later versions of Windows. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | Ntoskrnl.lib; Ntdll.lib |
| DLL | Ntoskrnl.exe; Ntdll.dll |
| IRQL | PASSIVE_LEVEL |