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dbc_OpenData Event

  • Cikk

Occurs when a database is opened explicitly by the OPEN DATABASE command or implicitly by another command such as MODIFY DATABASE or USE <Table> with a table contained in a closed database

PROCEDURE dbc_OpenData (cDatabaseName, lExclusive, lNoUpdate, lValidate )

-Or-

PROCEDURE dbc_OpenData 
LPARAMETERS [cDatabaseName, lExclusive, lNoUpdate, lValidate ]

Parameters

  • cDatabaseName
    Specifies the name of the database being opened.
  • lExclusive
    Specifies whether the database is being opened in exclusive mode.
  • lNoUpdate
    Specifies whether the NOUPDATE keyword was included in the OPEN DATABASE command, which means the database is being opened in read only mode.
  • lValidate
    Specifies whether the VALIDATE keyword was included in the OPEN DATABASE command, which causes the database to be validated as it is opened.

Remarks

You can use the dbc_OpenData event to track attempted access to the database as the database opens.

By returning false, this method prevents the database from being opened.

Example

PROCEDURE dbc_OpenData ;
         (cDatabaseName, ;
          lExclusive, ;
          lNoUpdate, ;
          lValidate)
 ? '     cDatabaseName = ' + TRANSFORM(cDatabaseName) + ' - ' ;
                       + TYPE('cDatabaseName')
 ? '     lExclusive    = ' + TRANSFORM(lExclusive) + ' - ' ;
                       + TYPE('lExclusive')
 ? '     lNoUpdate     = ' + TRANSFORM(lNoUpdate)  + ' - ' ;
                       + TYPE('lNoUpdate')
 ? '     lValidate     = ' + TRANSFORM(lValidate)  + ' - ' ;
                       + TYPE('lValidate'
ENDPROC

See Also

Enable or Disable DBC Events | OPEN DATABASE Command | MODIFY DATABASE Command