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
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