Set the control that appears on the left side of the banner.
The left control is optional. Setting the left control to null will remove it from
the banner - however, the creator of the control must dispose of the control.
*
@param control the control to be displayed on the left or null
*
@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>
<li>ERROR_INVALID_ARGUMENT - if the left control was not created as a child of the receiver</li>
</ul>
*
@since 3.0
Set the control that appears on the left side of the banner. The left control is optional. Setting the left control to null will remove it from the banner - however, the creator of the control must dispose of the control. * @param control the control to be displayed on the left or null * @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> <li>ERROR_INVALID_ARGUMENT - if the left control was not created as a child of the receiver</li> </ul> * @since 3.0