[gnome-devel-docs] tutorial samples vala: added button sample.

[Tiffany Antopolski <antopolski src gnome org>]

commit ed67ec99a78df27a5ff46edc7ee0419b4f1f6d4e
Author: Tiffany Antopolski <tiffany antopolski gmail com>
Date:   Tue Apr 10 18:22:31 2012 -0400

    tutorial samples vala: added button sample.

 platform-demos/C/button.js.page      |    2 +-
 platform-demos/C/button.vala.page    |   48 ++++++++++++++++++++++++++++++++-
 platform-demos/C/samples/button.vala |   38 ++++++++++++++++++++++++++
 platform-demos/Makefile.am           |    2 +-
 4 files changed, 86 insertions(+), 4 deletions(-)
---
diff --git a/platform-demos/C/button.js.page b/platform-demos/C/button.js.page
index 93afe3e..95f6294 100644
--- a/platform-demos/C/button.js.page
+++ b/platform-demos/C/button.js.page
@@ -16,7 +16,7 @@
 
   <title>Button widget</title>
 
-  <media type="image" mime="image/png" src="media/button.png"/>
+  <media type="image" mime="image/png" src="media/button_with_progress_bar.png"/>
   <p>A button widget connected to a progress bar.</p>
   
       <code mime="text/javascript" style="numbered"><![CDATA[
diff --git a/platform-demos/C/button.vala.page b/platform-demos/C/button.vala.page
index d8828cc..6db1c6d 100644
--- a/platform-demos/C/button.vala.page
+++ b/platform-demos/C/button.vala.page
@@ -11,14 +11,58 @@
       <years>2012</years>
     </credit>
 
-    <desc>A widget that emits a signal when clicked</desc>
+    <desc>A button widget which can be connected to other widgets.</desc>
   </info>
 
   <title>Button widget</title>
 
   <media type="image" mime="image/png" src="media/button.png"/>
-  <p>A button widget connected to a progress bar.</p>
+  <p>A button widget connected to stdout.printf (), and a modal window.</p>
   
       <code mime="text/x-vala" style="numbered"><![CDATA[
+using Gtk;
+
+/*callback for the "clicked" signal.*/
+void button_clicked_cb () {
+	stdout.printf ("You clicked the button!\n");
+        //TODO: add a modal window 
+}
+
+int main (string[] args) {
+
+	init (ref args);
+
+	var window = new Window ();
+	window.title = "GNOME Button";
+	window.set_default_size (250,50);
+
+	var button = new Button.with_label ("Click Me");
+        window.add (button); //adds the button to the window
+
+	window.window_position = WindowPosition.CENTER;
+
+	/* The "clicked" signal is emitted when the
+	   button is clicked.  The signal is connected to
+	   the button_clicked_cb method defined above.*/
+	button.clicked.connect (button_clicked_cb);
+
+	/*The "destroy" signal is emitted when the x
+	  in the top right of the window is clicked.
+	  The destroy signal is connected to the
+	  main_quit method, which destroys the window
+	  and exits the program.*/
+	window.destroy.connect (main_quit);
+
+	window.show_all ();
+
+	Gtk.main ();
+	return 0;
+}
 ]]></code>
+<p>
+  In this sample we used the following:
+</p>
+<list>
+  <item><p><link href="">thing1</link></p></item>
+</list>
 </page>
diff --git a/platform-demos/C/samples/button.vala b/platform-demos/C/samples/button.vala
new file mode 100644
index 0000000..65599fd
--- /dev/null
+++ b/platform-demos/C/samples/button.vala
@@ -0,0 +1,38 @@
+using Gtk;
+
+/*callback for the "clicked" signal.*/
+void button_clicked_cb () {
+	stdout.printf ("You clicked the button!\n");
+	//TODO: add a modal window
+}
+
+int main (string[] args) {
+
+	init (ref args);
+
+	var window = new Window ();
+	window.title = "GNOME Button";
+	window.set_default_size (250,50);
+
+	var button = new Button.with_label ("Click Me");
+	window.add (button);
+
+	window.window_position = WindowPosition.CENTER;
+
+	/* The "clicked" signal is emitted when the
+	   button is clicked.  The signal is connected to
+	   the button_clicked_cb method defined above.*/
+	button.clicked.connect (button_clicked_cb);
+
+	/*The "destroy" signal is emitted when the x
+	  in the top right of the window is clicked.
+	  The destroy signal is connected to the
+	  main_quit method, which destroys the window
+	  and exits the program.*/
+	window.destroy.connect (main_quit);
+
+	window.show_all ();
+
+	Gtk.main ();
+	return 0;
+}
diff --git a/platform-demos/Makefile.am b/platform-demos/Makefile.am
index 773da2c..6f49dbb 100644
--- a/platform-demos/Makefile.am
+++ b/platform-demos/Makefile.am
@@ -24,7 +24,7 @@ demo_sources = \
 
 DOC_FIGURES = \
 	media/ubuntu.png			\
-	media/button.png			\
+	media/button_with_progress_bar.png	\
 	media/entry.png			\
 	media/fedora.png			\
 	media/opensuse.png			\