mainwindow.ui
@@ -732,6 +732,19 @@
          </item>
         </layout>
        </item>
        <item row="0" column="1">
         <spacer name="verticalSpacer_3">
          <property name="orientation">
           <enum>Qt::Vertical</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
            <width>20</width>
            <height>40</height>
           </size>
          </property>
         </spacer>
        </item>
       </layout>
      </widget>
     </item>