Character and string types
From Lazarus wiki
Free Pascal supports several types of characters and strings.
AnsiChar
A variable of type AnsiChar is exactly 1 byte in size, and contains one ASCII character.
a |
Reference
WideChar
A variable of type WideChar is exactly 2 bytes in size, and contains one Unicode character in UTF-16 encoding.
a |
Reference
PChar
A variable of type PChar is basically a pointer to a Char type, but allows additional operations. PChars can be used to access C-style null-terminated strings, e.g. in interaction with certain OS libraries or third-party software.
a | b | c | #0 |
Reference
PWideChar
A variable of type PWideChar is a pointer to a WideChar variable.