Gets the number of items that are visible in the drop
down portion of the receiver's list.
<p>
Note: This operation is a hint and is not supported on
platforms that do not have this concept.
</p>
@return the number of items that are visible
@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>
Gets the number of items that are visible in the drop down portion of the receiver's list. <p> Note: This operation is a hint and is not supported on platforms that do not have this concept. </p>
@return the number of items that are visible
@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 3.0