~~~

xml/interface_ng.xml

@@ -6,11 +6,14 @@
       <attribute name="base_widget"/>
       <attribute name="sequence"/>
       <oneOrMore>
-	  <ref name="widget"/>
-	  <zeroOrMore>
-	    <ref name="message"/>
-	  </zeroOrMore>
+	<ref name="widget"/>
       </oneOrMore>
+      <oneOrMore>
+	<ref name="message_box"/>
+      </oneOrMore>
+      <zeroOrMore>
+	<ref name="message"/>
+      </zeroOrMore>
       <oneOrMore>
 	<ref name="sequence"/>
       </oneOrMore>
@@ -35,6 +38,9 @@
 	  <!-- geometry location is the location inside its parent -->
 	  <ref name="geometry_location"/>
 	</optional>
+	<optional>
+	  <ref name="variable"/>
+	</optional>
       </interleave>
       <zeroOrMore>
 	<ref name="widget"/>
@@ -70,6 +76,9 @@ on special cases -->
 	<optional>
 	  <attribute name="state"/>
 	</optional>
+	<optional>
+	  <attribute name="textvariable"/>
+	</optional>
       </interleave>
     </element>
   </define>
@@ -120,6 +129,25 @@ on special cases -->
     </choice>
   </define>
 
+  <define name="variable">
+    <element name="variable">
+      <attribute name="name"/>
+      <attribute name="type"/>
+      <optional>
+	<attribute name="value"/>
+      </optional>
+    </element>
+  </define>
+
+  <define name="message_box">
+    <element name="message_box">
+      <attribute name="name"/>
+      <attribute name="type"/>
+      <attribute name="title"/>
+      <attribute name="message"/>
+    </element>
+  </define>
+      
   <define name="message">
     <element name="message">
       <optional>