Returns a range of text. Returns an empty string if the
start of the range is greater than the end.
<p>
Indexing is zero based. The range of
a selection is from 0..N-1 where N is
the number of characters in the widget.
</p>
@param start the start of the range
@param end the end of the range
@return the range of text
@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 a range of text. Returns an empty string if the start of the range is greater than the end. <p> Indexing is zero based. The range of a selection is from 0..N-1 where N is the number of characters in the widget. </p>
@param start the start of the range @param end the end of the range @return the range of text
@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>