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Version: 20 R6 BETA

On Before Data Entry

CodeCan be called byDefinition
41List Box - List Box ColumnA list box cell is about to change to editing mode


This event is generated just before a cell in the list box is edited (before the entry cursor is displayed). This event allows the developer, for example, to display a different text depending on whether the user is in the display or edit mode.

When the cursor arrives in the cell, the On Before Data Entry event is generated in the list box or column method.

  • If, in the context of this event, $0 is set to -1, the cell is considered as not enterable. If the event was generated after Tab or Shift+Tab was pressed, the focus goes to either the next cell or the previous one, respectively.
  • If $0 is not -1 (by default $0 is 0), the cell is enterable and switches to editing mode.

See also Managing entry section.