LeadBytes: set of AnsiChar = ;
extern PACKAGE System::Set<System::Byte, 0, 255> LeadBytes;
Lists all values that can be the first byte of a double-byte character on the local system.
Use LeadBytes to test whether a value can represent the lead byte in a double-byte character. If an individual value is in the LeadBytes set, it is not necessarily used as the lead byte of a double-byte character. It may also appear as the second byte of a double-byte character. To determine whether the character is used as a lead byte, use the global ByteType or StrByteType function.
Note: LeadBytes is always empty when running on a system with a locale that does not use a multi-byte character system (MBCS).