Shows the selection.
<p>
If the selection is already showing
in the receiver, this method simply returns. Otherwise,
lines are scrolled until the selection is visible.
</p>
@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>
Shows the selection. <p> If the selection is already showing in the receiver, this method simply returns. Otherwise, lines are scrolled until the selection is visible. </p>
@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>