Simple MQTT Client

 <?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>1024</width>
     <height>768</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>MainWindow</string>
   </property>
   <widget class="QWidget" name="centralWidget">
    <layout class="QVBoxLayout" name="verticalLayout">
     <item>
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
        <layout class="QGridLayout" name="gridLayout">
         <item row="0" column="0">
          <widget class="QLabel" name="labelHost">
           <property name="text">
            <string>Host:</string>
           </property>
          </widget>
         </item>
         <item row="0" column="1">
          <widget class="QLineEdit" name="lineEditHost">
           <property name="text">
            <string/>
           </property>
          </widget>
         </item>
         <item row="0" column="2" rowspan="3">
          <widget class="QPushButton" name="buttonConnect">
           <property name="text">
            <string>Connect</string>
           </property>
          </widget>
         </item>
         <item row="2" column="0">
          <widget class="QLabel" name="labelPort">
           <property name="text">
            <string>Port:</string>
           </property>
          </widget>
         </item>
         <item row="2" column="1">
          <widget class="QSpinBox" name="spinBoxPort">
           <property name="maximum">
            <number>65535</number>
           </property>
           <property name="value">
            <number>1883</number>
           </property>
          </widget>
         </item>
         <item row="3" column="0">
          <widget class="QLabel" name="labelWebSockets">
           <property name="text">
            <string>WebSockets:</string>
           </property>
          </widget>
         </item>
         <item row="3" column="1">
          <widget class="QCheckBox" name="checkBoxWebSockets" />
         </item>
         <item row="4" column="0">
          <widget class="QLabel" name="labelSecure">
           <property name="text">
            <string>Secure:</string>
           </property>
          </widget>
         </item>
         <item row="4" column="1">
          <widget class="QCheckBox" name="checkBoxSecure" />
         </item>
         <item row="5" column="0">
          <widget class="QLabel" name="labelProtocol">
           <property name="text">
            <string>Protocol:</string>
           </property>
          </widget>
         </item>
         <item row="5" column="1">
          <widget class="QComboBox" name="comboBoxProtocol">
             <item>
                 <property name="text">
                     <string>mqtt 3.1</string>
                 </property>
             </item>
             <item>
                 <property name="text">
                     <string>mqtt 3.1.1</string>
                 </property>
             </item>
             <item>
                 <property name="text">
                     <string>mqtt 5.0</string>
                 </property>
             </item>
          </widget>
         </item>
        </layout>
       </item>
      </layout>
     </item>
     <item>
      <layout class="QGridLayout" name="gridLayout2">
       <item row="0" column="0">
        <widget class="QLabel" name="labelTopic">
         <property name="text">
          <string>Topic:</string>
         </property>
        </widget>
       </item>
       <item row="0" column="1">
        <widget class="QLineEdit" name="lineEditTopic">
         <property name="text">
          <string>qtmqtt/topic1</string>
         </property>
        </widget>
       </item>
       <item row="0" column="2">
        <widget class="QPushButton" name="buttonSubscribe">
         <property name="text">
          <string>Subscribe</string>
         </property>
        </widget>
       </item>
       <item row="1" column="0">
        <widget class="QLabel" name="labelMessage">
         <property name="text">
          <string>Message:</string>
         </property>
        </widget>
       </item>
       <item row="1" column="1">
        <widget class="QLineEdit" name="lineEditMessage">
         <property name="text">
          <string>This is a test message</string>
         </property>
        </widget>
       </item>
       <item row="1" column="2">
        <widget class="QPushButton" name="buttonPublish">
         <property name="text">
          <string>Publish</string>
         </property>
        </widget>
       </item>
      </layout>
     </item>
     <item>
      <widget class="QGroupBox" name="groupBox">
       <property name="title">
        <string>Log Messages</string>
       </property>
       <layout class="QHBoxLayout" name="horizontalLayout_2">
        <item>
         <widget class="QPlainTextEdit" name="editLog">
          <property name="readOnly">
           <bool>true</bool>
          </property>
         </widget>
        </item>
       </layout>
      </widget>
     </item>
     <item>
      <layout class="QHBoxLayout" name="horizontalLayout_3">
       <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>
       <item>
        <widget class="QPushButton" name="buttonQuit">
         <property name="text">
          <string>Quit</string>
         </property>
        </widget>
       </item>
      </layout>
     </item>
    </layout>
   </widget>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources/>
  <connections/>
 </ui>