$H
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Back to local compiler directives.
The $H or $LONGSTRINGS local compiler directives have the same meaning and determine whether the compiler interprets the reserved word String as an AnsiString.
The $LONGSTRINGS directive uses the ON and OFF switches.
The $H directive uses the + and - switches.
The default is {$H-}. The reserved word String is a ShortString.
The compiler mode {$MODE DELPHI} implies a {$H+} statement, all other modes switch it off. As a result, you should always put {$H+} after a mode directive.
Example:
// String is an AnsiString
{$H+}
// String is an AnsiString
{$LONGSTRINGS ON}
// Default; String is a ShortString
{$H-}
// Default; String is a ShortString
{$LongStrings OFF}
The {$H} or {$LONGSTRINGS} directive corresponds to the -Sh command line option.
