Is 0xFFFF a valid Unicode character?
c++, unicode
Solution
Go to the Unicode web site unicode.org/charts and enter FFFF in the box. It will give you a PDF to download (`UFFF0.pdf` for this character code; different files for different codes).
You'll find that U+FFFF is not a valid Unicode character:
FFFF `<`not a character`>`
- The value FFFF is guaranteed not to be a Unicode character at all
Problem
I just wonder whether 0xFFFF is a valid Unicode character. When I using the following code: ``` CStringW strTempW; CString strTemp1; INT_PTR nLen; strTempW.Format(L"%c", 0xFFFF); nLen = strTempW.GetLength(); strTemp1 += strTempW; nLen = strTemp1.GetLength(); ``` After executing the first codeline `strTempW.Format(L”%c”, 0xFFFF)`, I will get `strTempW` of length 1, but cannot see it first character in Visual Studio watch window. After executing the codeline `strTemp1 += strTempW`, I will get `strTemp1` of length 0. That is confusing to me. Is 0xFFFF taken as a valid Unicode code point or not?