d object in uipanel3</span>
0251 <span class="comment">% eventdata  structure with the following fields (see UIBUTTONGROUP)</span>
0252 <span class="comment">%    EventName: string 'SelectionChanged' (read only)</span>
0253 <span class="comment">%    OldValue: handle of the previously selected object or empty if none was selected</span>
0254 <span class="comment">%    NewValue: handle of the currently selected object</span>
0255 <span class="comment">% handles    structure with handles and user data (see GU