$H: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: $H
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| 1 | + | Back to [[local compiler directives]]. | |
| 2 | + | ||
| 3 | + | The **\$H** or **\$LONGSTRINGS** local compiler directives have the same meaning and determine whether the compiler interprets the reserved word [[String]] as an [[Ansistring|AnsiString]]. | |
| 4 | + | ||
| 5 | + | The \$LONGSTRINGS directive uses the ON and OFF switches. | |
| 6 | + | ||
| 7 | + | The \$H directive uses the + and - switches. | |
| 8 | + | ||
| 9 | + | The default is {\$H-}. The reserved word [[String]] is a [[Shortstring|ShortString]]. | |
| 10 | + | ||
| 11 | + | The compiler mode {\$MODE DELPHI} implies a {\$H+} statement, all other modes switch it off. As a result, you should always put {\$H+} after a mode directive. | |
| 12 | + | ||
| 13 | + | Example: | |
| 14 | + | ||
| 15 | + | ``` pascal | |
| 16 | + | // String is an AnsiString | |
| 17 | + | {$H+} | |
| 18 | + | ||
| 19 | + | // String is an AnsiString | |
| 20 | + | {$LONGSTRINGS ON} | |
| 21 | + | ||
| 22 | + | // Default; String is a ShortString | |
| 23 | + | {$H-} | |
| 24 | + | ||
| 25 | + | // Default; String is a ShortString | |
| 26 | + | {$LongStrings OFF} | |
| 27 | + | ``` | |
| 28 | + | ||
| 29 | + | The {\$H} or {\$LONGSTRINGS} directive corresponds to the **-Sh** command line option. | |
| 30 | + | ||
| 31 | + | --- | |
| 32 | + | *From the Free Pascal wiki, page "$H", as it stood on 2020-06-23 after a change by Kai Burghardt, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* |