SysUtils.StrByteType
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Delphi Information
From SysUtils.pas
function StrByteType(Str: PAnsiChar; Index: Cardinal): TMbcsByteType; overload; function StrByteType(Str: PWideChar; Index: Cardinal): TMbcsByteType; overload;
Unit: SysUtils
Type: function
Visibility: public
C++ Information
From SysUtils.hpp
Sysutils::TMbcsByteType __fastcall StrByteType(char * Str, unsigned int Index);
Unit: SysUtils
Type: function
Description
Indicates whether a byte in a string is a single-byte character, the first byte of a double-byte character, or the second byte of a double-byte character.
Call StrByteType to determine the type of the byte specified by the Index parameter, where 0 specifies the first byte in the string Str, 1 specifies the second byte, and so on.
If the system is not using a multi-byte character system (MBCS), StrByteType always returns mbSingleByte. Otherwise, StrByteType returns mbSingleByte if the indicated byte represents a complete character in Str, mbLeadByte if it represents the first byte of a double-byte character, and mbTrailByte if it represents the second byte of a double-byte character.
Note: No check is done to ensure that Index is less than the length of Str. It is the caller's responsibility to ensure that Index is not out of bounds.