event of tab items

hi, every one!

i create a tab, and add some tab items like tab_item1, tab_item2.
what i want to do is that when i clike the tab_item1, the contents of tab_item1 will refrensh, and the same with tab_item2.
so i use the
tab_item1->eventMouseButtonClick=MyGUI::newDelegate(this,&MainState::notifyMouseButtonClick);
tab_item2>eventMouseButtonClick=MyGUI::newDelegate(this,&MainState::notifyMouseButtonClick);

void MainState::notifyMouseButtonClick(MyGUI::Widget* _sender)
{
if (_sender == tab_item1)
{
...........//some code to refresh the contents
}
if (_sender == tab_item2)
{
...........//some code to refresh the contents
}


but it seems that doesn't work.

so what's wrong about this, is the matter with eventMouseButtonClick or the matter with usage of if (_sender == tab_item1)?
can someone help me to solve this, or tell me some other good event to refresh contents of tab items when cilck or active?
thks very much!

Use Tab widget event - eventTabChangeSelect. It gives you index of selected tab item.