CustomQT_widget

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="windowTitle">
   <string>Designer Composite Custom Widget Demo</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QVBoxLayout" name="verticalLayout">
<property name="leftMargin">
 <number>12</number>
</property>
<property name="topMargin">
 <number>12</number>
</property>
<property name="rightMargin">
 <number>12</number>
</property>
<property name="bottomMargin">
 <number>12</number>
</property>
    <property name="spacing">
     <number>10</number>
    </property>
    <item>
     <widget class="QLabel" name="label">
      <property name="text">
       <string>This main.ui references a custom widget class (LampIndicator) via promotion metadata.</string>
      </property>
      <property name="wordWrap">
       <bool>true</bool>
      </property>
     </widget>
    </item>
    <item>
     <widget class="LampIndicator" name="lampStatus">
      <property name="minimumSize">
       <size>
        <width>220</width>
        <height>28</height>
       </size>
      </property>
     </widget>
    </item>
    <item>
     <layout class="QHBoxLayout" name="buttonsLayout">
      <item>
       <widget class="QPushButton" name="btnOn">
        <property name="text">
         <string>ON</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="btnOff">
        <property name="text">
         <string>OFF</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="btnAlarm">
        <property name="text">
         <string>ALARM</string>
        </property>
       </widget>
      </item>
      <item>
       <spacer name="horizontalSpacer">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>40</width>
          <height>20</height>
         </size>
        </property>
       </spacer>
      </item>
     </layout>
    </item>
   </layout>
  </widget>
  <widget class="QMenuBar" name="menubar"/>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <customwidgets>
  <customwidget>
   <class>LampIndicator</class>
   <extends>QWidget</extends>
   <header>my_widgets.lamp_indicator</header>
  </customwidget>
 </customwidgets>
 <resources/>
 <connections/>
</ui>