If true, the topCenter will always appear on a separate line by itself, otherwise the
topCenter will appear in the top row if there is room and will be moved to the second row if
required.
*
@param show true if the topCenter will always appear on a separate line by itself
*
@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>
If true, the topCenter will always appear on a separate line by itself, otherwise the topCenter will appear in the top row if there is room and will be moved to the second row if required. * @param show true if the topCenter will always appear on a separate line by itself * @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>