Initializes a new instance of the BooleanChecker class.
The Column that this BooleanChecker should customize.
An object containing initialization data for the object.
Gets or sets a value that determines whether to show a 'Check All' items checkbox on the column header.
The default value for this property is true.
Raises the columnChanging event.
CancelEventArgs that contains the event data.
True if the event was not canceled.
Raises the itemChecked event.
Occurs after the value of the column property changes.
Occurs before the value of the column property changes.
Occurs when the user checks an item on this column.
Class that adds extra checkboxes to header and group cells of FlexGrid boolean columns to allow setting the values for all items or groups.
** Note **: When you attach a BooleanChecker to a Column, you may also want to set the column's Column.aggregate property to Aggregate.First, so the grid will create cells on group header rows to hold the checkboxes used to set the boolean values for the groups.