Unicode使用sqlite3，支持中文字符

Unicode下使用sqlite3，两个重要函数，供参考。

demo下载：https://download.csdn.net/download/u012033076/12336370

2020年4月27日17:37:19 补充：在执行查询时，将下面这句话中的strSql.GetLength()替换为-1；

rc = sqlite3_prepare(pDB,MbcsToUtf8(c2),-1/*strSql.GetLength()*/, &pstmt, &errMsg);

CStringA CDataBaseHelper::getSqliteString( const unsigned char* chData )
{
	int len = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)chData, -1, NULL, 0);
	wchar_t* pUnicode = new  wchar_t[len+1]; 
	memset(pUnicode,0,(len+1)*sizeof(wchar_t)); 
	MultiByteToWideChar(CP_UTF8, 0,(LPCSTR)chData, -1, (LPWSTR)pUnicode, len);
	wstring strUnicode = ( wchar_t* )pUnicode;
	delete pUnicode;
	CStringA strData(strUnicode.c_str());
	return strData;
}


CStringA CDataBaseHelper::MbcsToUtf8( const char *file )
{
	CStringA str;
	WCHAR   *pwchar=0;
	CHAR    *pchar=0;
	int len=0;
	int codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
	len=MultiByteToWideChar(codepage, 0, file, -1, NULL,0);
	pwchar=new WCHAR[len];
	if(pwchar!=0)
	{
		len = MultiByteToWideChar(codepage, 0, file, -1, pwchar, len);
		if( len!=0 ) 
		{
			len = WideCharToMultiByte(CP_UTF8, 0, pwchar, -1, 0, 0, 0, 0);
			pchar=new CHAR[len];
			if(pchar!=0)
			{
				len = WideCharToMultiByte(CP_UTF8, 0, pwchar, -1, pchar, len,0, 0);
				if(len!=0)                 
				{
					str=pchar;                    
				}
				delete pchar;
			}
			delete pwchar; 
		}
	}
	return str;
}