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Help / WLanguage / Managing databases / Managing xBase files / WLanguage functions
  • Using HDBOpenNoLock
  • Limitation
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Stored procedures
HDBOpenNoLock (Function)
In french: HDBOuvreSansBloquer
Native Connectors (Native Accesses)HFSQL ClassicAvailable only with these kinds of connection
In single-user mode, opens an xBase data file without locking it. The open xbBase file can be shared between several programs.
In multi-user mode, operating mode equivalent to the one of HDBOpen.
Example
HMode("*", hModeMono)
HDBOpenNoLock("COMMANDE", "CO", "C:\FICHIER\COMMANDE.DBF")
HDBIndex("COMMANDE", "C:\FICHIER\COMMANDE.NTX", "NumCde")
HReadFirst("COMMANDE", "NumCde")
WHILE HOut() = False
	Afficher_commande
	HReadNext()
END
Syntax
<Result> = HDBOpenNoLock(<Logical name of xBase file> , <Abbreviation of xBase file> , <Full name of xBase file>)
<Result>: Boolean
  • True if the operation was performed,
  • False if a problem occurs. HError is used to identify the error.
<Logical name of xBase file>: Character string
Logical name given to the xBase file. This name will be used to handle the xBase file programmatically.
<Abbreviation of xBase file>: Character string
Prefix (2 characters) used through programming to identify a file item. For example, the "Customer" data file has the prefix CL. To use the "Name" field in this file, use the syntax CL.NAME.
Warning: several files opened with HDBOpenNoLock cannot have the same abbreviation, even if the files have been closed.
<Full name of xBase file>: Character string
Path and full name of xBase file to open (with the extension).
Remarks

Using HDBOpenNoLock

Warning: The HDBOpenNoLock function should only be used in programs that do not modify the file and use single-user mode.. The opened file is not locked. Therefore, the following functions must not be used after HDBOpenNoLock:

Limitation

This function is not available when using a stand-alone executable.
Component: wd300hf.dll
Minimum version required
  • Version 9
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Last update: 03/27/2025

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