[glibmm] DBus: Well known service example: Complete the example.

[José Alburquerque <jaalburqu src gnome org>]

commit cac3585d825f96852df4a85e13f2143dda0d4239
Author: José Alburquerque <jaalburqu svn gnome org>
Date:   Tue Dec 21 20:05:34 2010 -0500

    DBus: Well known service example: Complete the example.
    
    	* examples/dbus/well-known-address-client.cc: Complete the well known
    	service example by calling the 'ListNames' method of the user's
    	session bus.

 ChangeLog                                  |    8 +++++++
 examples/dbus/well-known-address-client.cc |   29 ++++++++++++++++++++++++---
 2 files changed, 33 insertions(+), 4 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index c23ebeb..80c05b2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2010-12-21  José Alburquerque  <jaalburqu svn gnome org>
 
+	DBus: Well known service example: Complete the example.
+
+	* examples/dbus/well-known-address-client.cc: Complete the well known
+	service example by calling the 'ListNames' method of the user's
+	session bus.
+
+2010-12-21  José Alburquerque  <jaalburqu svn gnome org>
+
 	Add Variant< std::vector<[Glib::ustring|std::string]> specializations.
 
 	* glib/src/variant.{ccg,hg}: Add two Variant specializations to deal
diff --git a/examples/dbus/well-known-address-client.cc b/examples/dbus/well-known-address-client.cc
index 47a2944..0db6447 100644
--- a/examples/dbus/well-known-address-client.cc
+++ b/examples/dbus/well-known-address-client.cc
@@ -44,7 +44,31 @@ void dbus_proxy_available(Glib::RefPtr<Gio::AsyncResult>& result)
     return;
   }
 
-  // Call the 'ListNames' method and print the results.
+  try
+  {
+    // The 'ListNames' method returns a single element tuple of string arrays
+    // so first receive the tuple as a VariantBase container (that works fine
+    // for now).
+    Glib::Variant<Glib::VariantBase> result;
+    proxy->call_sync(result, "ListNames");
+
+    // Now extract the single item in the VariantBase container which is the
+    // array of strings (the names).
+    Glib::Variant< std::vector<Glib::ustring> > names_variant;
+    result.get(names_variant);
+
+    // Get the vector of strings.
+    std::vector<Glib::ustring> names = names_variant.get();
+
+    std::cout << "The names on the message bus are:" << std::endl;
+
+    for(unsigned i = 0; i < names.size(); i++)
+      std::cout << names[i] << "." << std::endl;
+  }
+  catch (Glib::Error& error)
+  {
+    std::cerr << "Got an error: '" << error.what() << "'." << std::endl;
+  }
 
   // Connect an idle callback to the main loop to quit when the main loop is
   // idle now that the method call is finished.
@@ -69,9 +93,6 @@ int main(int, char**)
     return 1;
   }
 
-  // Print out the unique name of the connection to the user session bus.
-  std::cout << connection->get_unique_name() << std::endl;
-
   // Create the proxy to the bus asynchronously.
   Gio::DBusProxy::create(connection, "org.freedesktop.DBus",
     "/org/freedesktop/DBus", "org.freedesktop.DBus",