@param pt the point in coordinates relative to the CTabFolder
@return the item at a point or null
@exception SWTException <ul>
<li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
<li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
</ul>
Gets the item at a point in the widget.
@param pt the point in coordinates relative to the CTabFolder @return the item at a point or null
@exception SWTException <ul> <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li> <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li> </ul>