fgdata/gui/dialogs/chat.xml

<?xml version="1.0"?>

<PropertyList>
  <name>chat</name>
  <modal>false</modal>
  <resizable>true</resizable>
  <x>-5</x>
  <y>5</y>
  <layout>hbox</layout>
  <default-padding>5</default-padding>

  <color>
    <enabled>false</enabled>
    <red>0.5</red>
    <green>0.5</green>
    <blue>0.5</blue>
    <alpha>0.3</alpha>
  </color>

  <button-color>
    <enabled>false</enabled>
    <red>0.5</red>
    <green>0.5</green>
    <blue>0.5</blue>
    <alpha>0.3</alpha>
  </button-color>

  <button>
    <legend>Close</legend>
    <pref-width>45</pref-width>
    <pref-height>30</pref-height>
    <equal>true</equal>
    <binding>
      <command>dialog-close</command>
    </binding>
    <color>
      <red alias="../../../button-color/red"/>
      <green alias="../../../button-color/green"/>
      <blue alias="../../../button-color/blue"/>
      <alpha alias="../../../button-color/alpha"/>
    </color>
  </button>

  <button>
    <legend>More</legend>
    <equal>true</equal>
    <pref-width>45</pref-width>
    <pref-height>30</pref-height>
    <binding>
     <command>dialog-show</command>
     <dialog-name>chat-full</dialog-name>
    </binding>
    <binding>
      <command>dialog-close</command>
    </binding>
    <color>
      <red alias="../../../button-color/red"/>
      <green alias="../../../button-color/green"/>
      <blue alias="../../../button-color/blue"/>
      <alpha alias="../../../button-color/alpha"/>
    </color>
  </button>

  <input>
    <name>compose</name>
    <pref-width>500</pref-width>
    <stretch>true</stretch>
    <halign>fill</halign>
    <length>50</length>
    <property>/sim/multiplay/chat-compose</property>
    <color>
      <red>0.5</red>
      <green>0.5</green>
      <blue>0.5</blue>
      <alpha>0.3</alpha>
    </color>
    <color-legend>
      <red>1</red>
      <green>1</green>
      <blue>1</blue>
      <alpha>1</alpha>
    </color-legend>
    <font>
      <name>FIXED_9x15</name>
    </font>
  </input>

  <button>
    <legend>Send</legend>
    <default>true</default>
    <pref-width>45</pref-width>
    <pref-height>30</pref-height>
    <equal>true</equal>
    <binding>
      <command>dialog-apply</command>
    </binding>
    <binding>
      <command>nasal</command>
      <script>
        var lchat = getprop("/sim/multiplay/chat-compose");
        if (lchat != "")
        {
          setprop("/sim/multiplay/chat", lchat);
          setprop("/sim/multiplay/chat-compose", "");
          gui.dialog_update("chat", "compose");
        }
      </script>
    </binding>
    <color>
      <red alias="../../../button-color/red"/>
      <green alias="../../../button-color/green"/>
      <blue alias="../../../button-color/blue"/>
      <alpha alias="../../../button-color/alpha"/>
    </color>
  </button>
</PropertyList>