Returns the widget content between the two offsets.
@param start offset of the first character in the returned String
@param end offset of the last character in the returned String
@return widget content starting at start and ending at end
@see #getTextRange(int,int)
@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>
@exception IllegalArgumentException <ul>
<li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li>
</ul>
Returns the widget content between the two offsets.
@param start offset of the first character in the returned String @param end offset of the last character in the returned String @return widget content starting at start and ending at end @see #getTextRange(int,int) @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> @exception IllegalArgumentException <ul> <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> </ul>