qtsample.xml

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>child</class>
 <widget class="QWidget" name="child">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>400</width>
    <height>300</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Form</string>
  </property>
  <layout class="QGridLayout" name="gridLayout">
   <item row="0" column="0">
    <widget class="QPushButton" name="addbutton">
     <property name="text">
      <string>PushButton</string>
     </property>
    </widget>
   </item>
   <item row="0" column="1">
    <widget class="QScrollArea" name="textsarea">
     <property name="widgetResizable">
      <bool>true</bool>
     </property>
     <widget class="QWidget" name="scrollAreaWidgetContents">
      <property name="geometry">
       <rect>
        <x>0</x>
        <y>0</y>
        <width>299</width>
        <height>280</height>
       </rect>
      </property>
      <layout class="QVBoxLayout" name="verticalLayout_3">
       <property name="spacing">
        <number>30</number>
       </property>
       <property name="sizeConstraint">
        <enum>QLayout::SetDefaultConstraint</enum>
       </property>
       <property name="topMargin">
        <number>10</number>
       </property>
       <item>
        <widget class="QLineEdit" name="lineEdit">
         <property name="minimumSize">
          <size>
           <width>0</width>
           <height>30</height>
          </size>
         </property>
         <property name="maximumSize">
          <size>
           <width>16777215</width>
           <height>30</height>
          </size>
         </property>
        </widget>
       </item>
      </layout>
     </widget>
    </widget>
   </item>
  </layout>
 </widget>
 <resources/>
 <connections/>
</ui>