toupper_nt_mb.c File Reference

#include <windef.h>
#include <ndk/rtlfuncs.h>

Include dependency graph for toupper_nt_mb.c:

Go to the source code of this file.

Macros
#define	WIN32_NO_STATUS

Functions
_Check_return_ int __cdecl	toupper_nt_mb (_In_ int _C)

Macro Definition Documentation

WIN32_NO_STATUS

#define WIN32_NO_STATUS

Definition at line 8 of file toupper_nt_mb.c.

Function Documentation

toupper_nt_mb()

_Check_return_ int __cdecl toupper_nt_mb

(

_In_ int

_C

)

Definition at line 15 of file toupper_nt_mb.c.

{
    PUCHAR ptr;
    WCHAR wc, wcUpper;
    CHAR chrUpper[2];
    ULONG mbSize;
 
    ptr = (PUCHAR)&_C;
    wc = RtlAnsiCharToUnicodeChar(&ptr);
    wcUpper = RtlUpcaseUnicodeChar(wc);
    RtlUnicodeToMultiByteN(chrUpper, 2, &mbSize, &wcUpper, sizeof(WCHAR));
 
    if (mbSize == 2)
        return (UCHAR)chrUpper[1] + ((UCHAR)chrUpper[0] << 8);
    else if (mbSize == 1)
        return (UCHAR)chrUpper[0];
    else
        return (WCHAR)_C;
}