Use an equivalent function that does have a Unicode version. For example, use CreateFile instead of OpenFileIf your favorite function has not been exported in a Unicode version, you can often use a very simple workaround:
Use an equivalent function that does have a Unicode version. For example, use CreateFile instead of OpenFile
Map characters to/from 8-bits around the function call. For example, the number formatting functions atoi and itoa understand only the digits 0–9. Normally, mapping Unicode to 8-bit characters could cause loss of data; but in this case, you get the correct result by changing the following statements:
char str[4];
num = atoi(str);
to a type-independent:
TCHAR str[4];
CHAR strTmp[SIZE];
#ifdef UNICODE
wctomb(strTmp, str, sizeof(strTmp));
num = atoi(strTmp);
#else
num = atoi(str);
#endif
where wctomb is the C runtime function to translate Unicode to ASCII. The atoi function stops at any character that is not a digit.