只包含中英文的UTF-8与Unicode的转换（不支持其它语言）

// 把UTF-8转换成Unicode
void UTF_8ToUnicode(char *pIn,TCHAR* pOut)
{
char* uchar = (char *)pOut;

uchar[1] = ((pIn[0] & 0x0F) << 4) + ((pIn[1] >> 2) & 0x0F);
uchar[0] = ((pIn[1] & 0x03) << 6) + (pIn[2] & 0x3F);

return;
}

void UTF8_UNICODE(char *lpIn, int nLen, TCHAR *lpOut)
{
int i = 0;
int j = 0;
while( i < nLen )
{
WCHAR unicode = 0;
if( lpIn[i] > 0 )
{
*((char *)&unicode) = lpIn[i++];
}
else
{
UTF_8ToUnicode(lpIn + i,&unicode);
i += 3;
}
lpOut[j++] = unicode;
}
lpOut[j] = L'/0';
}

[code]2.Unicode转UTF-8

void UnicodeToUTF_8(TCHAR* pIn,char*pOut)
{
char* pchar = (char *)pIn;

pOut[0] = (0xE0 | ((pchar[1] & 0xF0) >> 4));
pOut[1] = (0x80 | ((pchar[1] & 0x0F) << 2)) + ((pchar[0] & 0xC0) >> 6);
pOut[2] = (0x80 | (pchar[0] & 0x3F));
}

void UNICODE_UTF8(TCHAR* lpIn,int nLen,char* lpOut)
{
int i = 0;
int j = 0;

while(i < nLen)
{
if(*(lpIn+i)>127)
{
UnicodeToUTF_8(lpIn + i,lpOut + j);
j+=3;
}
else
{
*(lpOut+j) = (char)*(lpIn+i);
j++;
}
i++;
}
lpOut[j+1] = 0;
}

[code]