RtlDowncaseUnicodeChar - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
#ifndef _NTRTL_H

/**
 * The RtlDowncaseUnicodeChar routine converts the specified Unicode character to lowercase.
 *
 * \param[in] SourceCharacter Specifies the character to convert.
 * \return The lowercase version of the specified Unicode character.
 * \sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-rtldowncaseunicodechar
 */
NTSYSAPI
WCHAR
NTAPI
RtlDowncaseUnicodeChar(
    _In_ WCHAR SourceCharacter
    );

#endif

View code on GitHub
// wdm.h

NTSYSAPI WCHAR RtlDowncaseUnicodeChar(
  [in] WCHAR SourceCharacter
);
View the official Windows Driver Kit DDI reference

NtDoc

This function is documented in Windows Driver Kit.

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Windows Driver Kit DDI reference (nf-wdm-rtldowncaseunicodechar)

RtlDowncaseUnicodeChar function

Description

The RtlDowncaseUnicodeChar routine converts the specified Unicode character to lowercase.

Parameters

SourceCharacter [in]

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.

See also

RtlDowncaseUnicodeString

RtlUpcaseUnicodeChar

View the official Windows Driver Kit DDI reference

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