Returns the receiver's hot image if it has one, or null
if it does not.
<p>
The hot image is displayed when the mouse enters the receiver.
</p>
@return the receiver's hot image
@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 hot image if it has one, or null if it does not. <p> The hot image is displayed when the mouse enters the receiver. </p>
@return the receiver's hot image
@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>