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tbIsLock()
Controls the block of the record for the object
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Syntax:

     tbIsLock(<oTbr>) --> lLock

Parameters:

     <oTbr>     Object of which to control the Lock

Returns:

     <lLock> If .T. the current record of the object has an active Lock

Description:

     Permits the control of the actual record within the file of the object
     <oTbr> that has an active Lock

Example:

     IF!tbIsLock(oTbr)
        // Check the recordd Lock on the object
        (oWin: W_ALIAS)>(dfNet(NET_RECORDLOCK) )
     ENDIF

See also:

     tbBrwNew(), tbMaximize(), tbMinimize()