HUnlockRecNum (Function)

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HUnlockRecNum (Function)

In french: HDébloqueNumEnr

Not available with these kinds of connection

Unlocks a record that was locked by:

the HLockRecNum function,
or a read function used with a blocking parameter (e.g. function HRead used with the constant hWriteblock or the constant hLockReadWrite).

Remark: The HUnlockRecNum function does not unlock an Record blocked by another application.

Versions 16 and later

This function is now available for Java applications.

This function is available for HFSQL data files only. It is not available for the data files accessed by JDBC.

New in version 16

This function is now available for Java applications.

This function is available for HFSQL data files only. It is not available for the data files accessed by JDBC.

This function is now available for Java applications.

This function is available for HFSQL data files only. It is not available for the data files accessed by JDBC.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

Versions 18 and later

This function is now available in Android widget mode.

This function is now available for Android applications (for HFSQL data files).

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Android widget mode.

This function is now available for Android applications (for HFSQL data files).

This function is now available in Windows Store apps mode.

This function is now available in Android widget mode.

This function is now available for Android applications (for HFSQL data files).

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Example

// Blocage
HLockRecNum(CLIENT, hRecNumCurrent, hLockReadWrite)
// Modification de l'enregistrement
...
// Déblocage
HUnlockRecNum(CLIENT, hRecNumCurrent)

Syntax

<Result> = HUnlockRecNum([<Data file> [, <Record number>]])

<Result>: Boolean

True if the record was unlocked,
False if a problem occurred. HError is used to identify the error.

<Data file>: Optional character string

Name of the data file used.
If this name is not specified, HUnlockRecNum will use the last data file used by the last HFSQL management function (function starting with "H").

<Record number>: Optional integer

Number of the record to unlock.
If this number is not specified (equal to 0 or to the constant hRecNumCurrent), the function HUnlockRecNum will handle the current Record.
The HUnlockRecNum function only unlocks the current Record. You cannot specify a record number other than the current one (to specify the current record number, use the hRecNumCurrent constant).

Remarks

HUnlockRecNum has no effect if:

The data file is in single-user mode (see HMode).
The record is not locked.

Component: wd270hf.dll