TVN_ITEMEXPANDING of CTreectrl !!!

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Hi all,

i m using this for TVN_ITEMEXPANDING,here its working fine when i exand or collapse tree item by keyboard.

But when i exand or collapse tree item by mouce click than it is change image of previously selected item.

please tell me where i m wrong.

void CTree::OnTvnItemexpanding(NMHDR *pNMHDR, LRESULT *pResult)<br />{<br />	LPNMTREEVIEW pNMTreeView = reinterpret_cast<LPNMTREEVIEW>(pNMHDR);<br />	<br />	NMTREEVIEW* pnmtv = (NMTREEVIEW*) pNMHDR;<br />	<br />	CTreeCtrl& tc = GetTreeCtrl();<br />	HTREEITEM item = tc.GetSelectedItem(); <br /><br />	if ( pnmtv->action == TVE_EXPAND )<br />	{<br />		tc.SetItemImage(item,1,1);		<br />	}	<br />	else if ( pnmtv->action == TVE_COLLAPSE )<br />	{<br />		tc.SetItemImage(item,0,0);<br />	}<br />	<br />	*pResult = 0;

}

thanks in advance.