---
name: "RtlDowncaseUnicodeChar"
section: "3w"
platform: "linux"
package: "libwine-dev"
version: "1.4.1-4"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/RtlDowncaseUnicodeChar"
---

# RtlDowncaseUnicodeChar(3w)

## NAME

**RtlDowncaseUnicodeChar** (NTDLL.@)

## SYNOPSIS

WCHAR RtlDowncaseUnicodeChar\
  (\
   WCHAR *wch*\
  )

## DESCRIPTION

Converts a Unicode character to lowercase.

## PARAMS

*wch* **\[In\]**  Character to convert.

## RETURNS

The lowercase character value.

## IMPLEMENTATION

Declared in **"winternl.h"**.

Implemented in **"dlls/ntdll/rtlstr.c"**.

Debug channel **"ntdll"**.