MainWindow.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>736</width>
    <height>390</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QGridLayout" name="gridLayout">
    <item row="0" column="0">
     <widget class="MyPushButton" name="btn1">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="0" column="1">
     <widget class="MyPushButton" name="btn2">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="0" column="2">
     <widget class="MyPushButton" name="btn3">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="2" column="0">
     <widget class="MyPushButton" name="btn8">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="3" column="0">
     <widget class="MyPushButton" name="btn7">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="3" column="1">
     <widget class="MyPushButton" name="btn6">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="3" column="2">
     <widget class="MyPushButton" name="btn5">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="2" column="2">
     <widget class="MyPushButton" name="btn4">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="2" column="1">
     <widget class="MySlider" name="horizontalScrollBar">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
 </widget>
 <customwidgets>
  <customwidget>
   <class>MyPushButton</class>
   <extends>QPushButton</extends>
   <header>MyPushButton.h</header>
  </customwidget>
  <customwidget>
   <class>MySlider</class>
   <extends>QScrollBar</extends>
   <header>MySlider.h</header>
  </customwidget>
 </customwidgets>
 <resources/>
 <connections/>
</ui>