c++ 字符检测 TCharacter

IsSurrogatePair，IsHighSurrogate，IsLowSurrogate，ConvertToUtf32 http://docwiki.embarcadero.com/CodeExamples/XE8/en/TCharacterSurrogates_%28C%2B%2B%29

/* Calculate all all kinds of charcters in the memo */
for (int i = 1; i <= allText.Length(); ++i)
{
/* Check for digit */
if (TCharacter::IsDigit(allText[i])) LDigits++;

/* Check for number */
if (TCharacter::IsNumber(allText[i])) LNumber++;

/* Check for letter */
if (TCharacter::IsLetter(allText[i])) LLetters++;

/* Check for lower-cased letter */
if (TCharacter::IsLower(allText[i])) LLower++;

/* Check for upper-cased letter */
if (TCharacter::IsUpper(allText[i])) LUpper++;

/* Check for punctuation */
if (TCharacter::IsPunctuation(allText[i])) LPuct++;

/* Check for separators */
if (TCharacter::IsSeparator(allText[i])) LSep++;

/* Check for symbols */
if (TCharacter::IsSymbol(allText[i])) LSymbols++;

/* Check for symbols */
if (TCharacter::IsWhiteSpace(allText[i])) LWhites++;
}