Is data file locked

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4D v20.6

Is data file locked


Is data file locked -> Function result

Parameter	Type	Description
Function result	Boolean	True = file/segment locked False = file/segment not locked

The Is data file locked command returns True if the data file of the open database or at least one of its segments is locked — i.e. write protected.

Placed, for instance, in the , this command enables the prevention of any risk of accidental opening of a locked data file.

This method will prevent the opening of the database if the data file is locked:

 If(Is data file locked)

    ALERT("The data file is locked. Impossible to open database.")

    QUIT 4D

 End if

PROPERTIES

Product: 4D
Theme: 4D Environment
Number: 716

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Description

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HISTORY

Created: 4D 2003

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