Returns the horizontal scroll offset relative to the start of the line.
@return horizontal scroll offset relative to the start of the line,
measured in character increments starting at 0, if > 0 the content is scrolled
@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 the horizontal scroll offset relative to the start of the line.
@return horizontal scroll offset relative to the start of the line, measured in character increments starting at 0, if > 0 the content is scrolled @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>