TCustomListView.UpdateMultiSelList procedure
Updates the specified list item in the multi-selection list for the control.
Declaration
procedure UpdateMultiSelList(AItem: TListItem; Add: Boolean)Arguments
AItem | The TListItem instance that is added or removed in the method. |
Add | True to add the list item to the multi-selection list. False to remove the item from the multi-selection list. |
Description
UpdateMultiSelList is a method used to add or remove the list item
specified in
AItem in the multi-selection list for the control. It
calls the corresponding method in the widgetset class instance to apply the
argument values.
The widget ensures that the internal TIntegerList instance used
for multi-selected items is allocated when needed.
AItem is the TListItem instance added or removed in the method.
When Add is True, the index for the list item is added to the
multi-selection list if it is not already present. The Sort method in the
list is called to reorder the index values after the addition. When Add is
False, the index for the list item is deleted from the multi-selection
list.
UpdateMultiSelList is called from the CNNotify method when LVN_ITEMCHANGED
messages are handled for the control and both MultiSelect and
OwnerData are enabled.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.