OnSelectQuery
Occur before cell is being to become selected. Event include Boolean (var) parameter which may be used to prevent selection change.property OnSelectQuery: TNxCellQueryEvent read FOnSelectQuery write FOnSelectQuery;This event is useful in situations where we don't want that clicks in some column (e.g. Toolbar column or Progress column) to change selection.
Example:
procedure TForm1.NextGrid61SelectQuery(Sender: TObject; ACol,
ARow: Integer; var Accept: Boolean);
begin
if ACol = 3 then Accept := False;
end;