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HChangeKey (Function) In french: HChangeClé
 Not available with this kind of connection
Changes the browse item. The current record is not modified. After the function is executed, the browse is performed from the current record, according to the new browse item. HChangeKey can be used to start browsing a data file, after being positioned on a record with direct access (with HRead for example). Remark: This function can be used on an HFSQL data file, query or view.
IF HChangeKey(Client, Nom) = False THEN
Error("Sélectionnez un client dans la table")
END
Syntax
<Result> = HChangeKey(<Data file> [, <Item> [, <Browse mode>]])
<Result>: Boolean - True if the search key was modified,
- False in the event of a problem (e.g. no get function preceded the key change): the search key is not modified. HError is used to identify the error.
<Data file>: Character string Name of data file, HFSQL view or query used. <Item>: Optional character string Name of the new browse item.
If this name is not specified, HChangeKey will use the last browse item specified by the last HFSQL management function (function starting with "H"). <Browse mode>: Optional Integer constant Characteristics of the data file browse on the new key: | | | hKeepFilter | The filter set by HFilter will be taken into account, even if the search key is not optimized for the filter.
Reminder: HFilter returns the search key optimized for the filter.
Caution: In this case, performance issues may arise for large data files |
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