Updated the dialog, and made the fields read-write rather than

read-only.

gui.xml

@@ -1,5 +1,40 @@
+<?xml version="1.0"?>
+<!--
+Early sample GUI configuration.
+
+This file will eventually hold (or point to) the configuration for all
+of the FlightGear GUI.  For now, however, the contents are strictly
+experimentation.  Here are some quick notes:
+
+1. Coordinates are from the bottom left corner of the parent container
+   (the bottom-left convention comes from OpenGL).
+
+2. Allowed types are "group", "dialog", "input", "text", and
+   "button".
+
+3. Any component may have an "x", "y", "width", and "height"
+   subproperty.
+
+4. For GUI purposes, the FlightGear window is always assumed to be
+   1024x768, no matter how large or small it is actually displayed.
+
+5. The top-level dialog container will always be centered on the
+   screen.
+
+6. Top-level objects without a name will be ignored.
+
+7. If changing a property value in an "input" component isn't working,
+   it's probably a problem with the property; try the FlightGear
+   property browser and see if it can be changed there.
+
+8. Use these notes with caution; they're probably already out of date.
+
+-->
+
 <PropertyList>
 
+ <!-- A sample dialog to say hello and control the orientation -->
+
  <dialog>
   <name>hello</name>
   <width>400</width>
@@ -17,8 +52,8 @@
    <y>110</y>
    <width>200</width>
    <height>25</height>
-   <label>degrees latitude</label>
+   <label>degrees roll</label>
-   <default-value-prop>/position/latitude-deg</default-value-prop>
+   <default-value-prop>/orientation/roll-deg</default-value-prop>
   </input>
 
   <input>
@@ -26,8 +61,8 @@
    <y>80</y>
    <width>200</width>
    <height>25</height>
-   <label>degrees longitude</label>
+   <label>degrees pitch</label>
-   <default-value-prop>/position/longitude-deg</default-value-prop>
+   <default-value-prop>/orientation/pitch-deg</default-value-prop>
   </input>
 
   <input>
@@ -35,17 +70,39 @@
    <y>50</y>
    <width>200</width>
    <height>25</height>
-   <label>feet altitude (ASL)</label>
+   <label>degrees heading</label>
-   <default-value-prop>/position/altitude-ft</default-value-prop>
+   <default-value-prop>/orientation/heading-deg</default-value-prop>
   </input>
 
   <button>
+   <x>5</x>
    <y>10</y>
-   <width>100</width>
+   <legend>OK</legend>
-   <legend>Enough, already!</legend>
+   <action>close-apply</action>
    <default>true</default>
   </button>
 
+  <button>
+   <x>105</x>
+   <y>10</y>
+   <legend>Apply</legend>
+   <action>apply</action>
+  </button>
+
+  <button>
+   <x>205</x>
+   <y>10</y>
+   <legend>Update</legend>
+   <action>update</action>
+  </button>
+
+  <button>
+   <x>305</x>
+   <y>10</y>
+   <legend>Cancel</legend>
+   <action>close</action>
+  </button>
+
  </dialog>
 
 </PropertyList>