HReadSeekLock (Function)

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HReadSeekLock (Function)

In french: HLitRechercheBloque

Available only with this kind of connection

Warning
HReadSeekLock is kept for backward compatibility (this function will still be supported in the forthcoming version).

From version 8, this function was replaced by HReadSeekFirst and HReadSeekLast. These functions are used to easily manage the exact-match searches, the generic searches and the searches in filters, ...

To benefit from the new features linked to searches in WINDEV, use HReadSeekFirst and HReadSeekLast. These functions allow you to perform an exact-match search by default.

Below is the documentation of HReadSeekLock, available in WINDEV 5.5.

This function can be used with HFSQL Client/Server data files or with data files handled by Native Accesses. This function is not available for HFSQL Mobile.

Purpose

Reading and locking the first record whose value for the specified key is greater than or equal to the value of the search criterion.

Syntax

HReadSeekLock(<LogicalFileName>, <NameKeyItem>, <SoughtValue>)

<LogicalFileName> is the name of the file to read
<NameKeyItem> is the name of the key
<SoughtValue> is the value of the key to find