Returns the user-interface thread for the receiver.
@return the receiver's user-interface thread
@exception SWTException <ul> <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> </ul>
See Implementation
Returns the user-interface thread for the receiver.
@return the receiver's user-interface thread
@exception SWTException <ul> <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> </ul>