Returns the receiver's cursor, or null if it has not been set.
<p>
When the mouse pointer passes over a control its appearance
is changed to match the control's cursor.
</p>
@return the receiver's cursor or <code>null</code>
@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 receiver's cursor, or null if it has not been set. <p> When the mouse pointer passes over a control its appearance is changed to match the control's cursor. </p>
@return the receiver's cursor or <code>null</code>
@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>
@since 3.3