tap search button trigger what event?
<p>When I tap the search button on keyboard  display UISearchDisplayController what event it will trigger?</p>

<p>none of the event was triggered</p>

<pre><code>- (void) searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller;
{

}
- (void) searchDisplayControllerDidBeginSearch:(UISearchDisplayController *)controller;
{

}
- (void) searchDisplayControllerWillEndSearch:(UISearchDisplayController *)controller;
{

}
- (void) searchDisplayControllerDidEndSearch:(UISearchDisplayController *)controller;
{

}
// called when the table is created destroyed, shown or hidden. configure as necessary.
- (void)searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView;
{

}
- (void)searchDisplayController:(UISearchDisplayController *)controller willUnloadSearchResultsTableView:(UITableView *)tableView;
{

}

// called when table is shown/hidden
- (void)searchDisplayController:(UISearchDisplayController *)controller willShowSearchResultsTableView:(UITableView *)tableView;
{

}
- (void)searchDisplayController:(UISearchDisplayController *)controller didShowSearchResultsTableView:(UITableView *)tableView;
{

}
- (void)searchDisplayController:(UISearchDisplayController *)controller willHideSearchResultsTableView:(UITableView *)tableView;
{

}
- (void)searchDisplayController:(UISearchDisplayController *)controller didHideSearchResultsTableView:(UITableView *)tableView;
{

}
</code></pre>

<p>Welcome any comment</p>
