Returns <code>true</code> if the item will be rendered in the visible area of the CTabFolder. Returns false otherwise.
*
@return <code>true</code> if the item will be rendered in the visible area of the CTabFolder. Returns false otherwise.
*
@exception SWTException <ul>
<li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
<li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
</ul>
Returns <code>true</code> if the item will be rendered in the visible area of the CTabFolder. Returns false otherwise. * @return <code>true</code> if the item will be rendered in the visible area of the CTabFolder. Returns false otherwise. * @exception SWTException <ul> <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> </ul>
@since 3.0