[gtkmm-documentation] Examples: Remove unnecessary final 0 parameter for Box spacing and padding.

[Murray Cumming <murrayc src gnome org>]

commit 5a68b0238b1263df5d91f7aa6d8811dcfc7633e6
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Apr 9 09:34:04 2014 +0200

    Examples: Remove unnecessary final 0 parameter for Box spacing and padding.
    
    0 is already the default.

 examples/book/actionbar/examplewindow.cc         |   10 +++++-----
 examples/book/box/examplewindow.cc               |    6 +++---
 examples/book/buttonbox/examplewindow.cc         |    4 ++--
 examples/book/listbox/examplewindow.cc           |   12 ++++++------
 examples/book/popover/examplewindow.cc           |    6 +++---
 examples/others/cellrenderercustom/popupentry.cc |    2 +-
 6 files changed, 20 insertions(+), 20 deletions(-)
---
diff --git a/examples/book/actionbar/examplewindow.cc b/examples/book/actionbar/examplewindow.cc
index 15ff7b1..aa19e5e 100644
--- a/examples/book/actionbar/examplewindow.cc
+++ b/examples/book/actionbar/examplewindow.cc
@@ -37,9 +37,9 @@ ExampleWindow::ExampleWindow()
   m_prev_button.set_image_from_icon_name("go-previous-symbolic", Gtk::ICON_SIZE_BUTTON, true);
   m_next_button.set_image_from_icon_name("go-next-symbolic", Gtk::ICON_SIZE_BUTTON, true);
   m_photo_button.set_image_from_icon_name("media-record-symbolic", Gtk::ICON_SIZE_BUTTON, true);
-  m_photo_box.pack_start(m_prev_button, Gtk::PACK_SHRINK, 0);
-  m_photo_box.pack_start(m_photo_button, Gtk::PACK_SHRINK, 0);
-  m_photo_box.pack_start(m_next_button, Gtk::PACK_SHRINK, 0);
+  m_photo_box.pack_start(m_prev_button, Gtk::PACK_SHRINK);
+  m_photo_box.pack_start(m_photo_button, Gtk::PACK_SHRINK);
+  m_photo_box.pack_start(m_next_button, Gtk::PACK_SHRINK);
   Glib::RefPtr<Gtk::StyleContext> style_context = m_photo_box.get_style_context();
   style_context->add_class("raised");
   style_context->add_class("linked");
@@ -51,8 +51,8 @@ ExampleWindow::ExampleWindow()
 
   // Layout
   m_box.set_homogeneous(false);
-  m_box.pack_start(m_face_image, Gtk::PACK_EXPAND_WIDGET, 0);
-  m_box.pack_end(m_action_bar, Gtk::PACK_SHRINK, 0);
+  m_box.pack_start(m_face_image, Gtk::PACK_EXPAND_WIDGET);
+  m_box.pack_end(m_action_bar, Gtk::PACK_SHRINK);
   add(m_box);
 
   show_all_children();
diff --git a/examples/book/box/examplewindow.cc b/examples/book/box/examplewindow.cc
index cc64367..bd32a75 100644
--- a/examples/book/box/examplewindow.cc
+++ b/examples/book/box/examplewindow.cc
@@ -32,7 +32,7 @@ ExampleWindow::ExampleWindow(int which)
   {
     case 1:
     {
-      m_Label1.set_text("Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0); set_homogeneous(false);");
+      m_Label1.set_text("Gtk::Box(Gtk::ORIENTATION_HORIZONTAL); set_homogeneous(false);");
 
       // Align the label to the left side.  We'll discuss this function and
       // others in the section on Widget Attributes.
@@ -64,7 +64,7 @@ ExampleWindow::ExampleWindow(int which)
       m_box1.pack_start(m_separator1, Gtk::PACK_SHRINK, 5);
 
       // create another new label, and show it.
-      m_Label2.set_text("Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0); set_homogeneous(true);");
+      m_Label2.set_text("Gtk::Box(Gtk::ORIENTATION_HORIZONTAL); set_homogeneous(true);");
       m_Label2.set_alignment(Gtk::ALIGN_START, Gtk::ALIGN_START);
       m_box1.pack_start(m_Label2, Gtk::PACK_SHRINK);
 
@@ -96,7 +96,7 @@ ExampleWindow::ExampleWindow(int which)
 
       m_box1.pack_start(m_separator1, Gtk::PACK_SHRINK, 5);
 
-      m_Label2.set_text("Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0); set_homogeneous(false);");
+      m_Label2.set_text("Gtk::Box(Gtk::ORIENTATION_HORIZONTAL); set_homogeneous(false);");
       m_Label2.set_alignment(Gtk::ALIGN_START, Gtk::ALIGN_START);
       m_box1.pack_start(m_Label2, Gtk::PACK_SHRINK);
 
diff --git a/examples/book/buttonbox/examplewindow.cc b/examples/book/buttonbox/examplewindow.cc
index 2ca737f..d18a37d 100644
--- a/examples/book/buttonbox/examplewindow.cc
+++ b/examples/book/buttonbox/examplewindow.cc
@@ -37,7 +37,7 @@ ExampleWindow::ExampleWindow()
   m_VBox.pack_start(*Gtk::manage(
               new ExampleButtonBox(true, "Spread (spacing 40)", 40,
                   Gtk::BUTTONBOX_SPREAD)),
-          Gtk::PACK_EXPAND_WIDGET, 0);
+          Gtk::PACK_EXPAND_WIDGET);
 
   m_VBox.pack_start(*Gtk::manage(
               new ExampleButtonBox(true, "Edge (spacing 30)", 30,
@@ -64,7 +64,7 @@ ExampleWindow::ExampleWindow()
   m_HBox.pack_start(*Gtk::manage(
               new ExampleButtonBox(false, "Spread (spacing 5)", 5,
                   Gtk::BUTTONBOX_SPREAD)),
-          Gtk::PACK_EXPAND_WIDGET, 0);
+          Gtk::PACK_EXPAND_WIDGET);
 
   m_HBox.pack_start(*Gtk::manage(
               new ExampleButtonBox(false, "Edge (spacing 30)", 30,
diff --git a/examples/book/listbox/examplewindow.cc b/examples/book/listbox/examplewindow.cc
index ff24931..694243e 100644
--- a/examples/book/listbox/examplewindow.cc
+++ b/examples/book/listbox/examplewindow.cc
@@ -50,16 +50,16 @@ const SelectionModeStruct selectionModes[] =
 } // anonymous namespace
 
 ExampleWindow::ExampleWindow() :
-  m_HBox(Gtk::ORIENTATION_HORIZONTAL, 0),
-  m_VBox1(Gtk::ORIENTATION_VERTICAL, 0),
-  m_VBox2(Gtk::ORIENTATION_VERTICAL, 0),
+  m_HBox(Gtk::ORIENTATION_HORIZONTAL),
+  m_VBox1(Gtk::ORIENTATION_VERTICAL),
+  m_VBox2(Gtk::ORIENTATION_VERTICAL),
   m_ListBox(),
   m_ComboBox(/* has_entry= */ false),
   m_CheckButton_SingleClick("single click mode", /* mnemonic= */ false),
   m_ScrolledWindow(),
   m_Row3("blah3", 3),
-  m_VBox_Row(Gtk::ORIENTATION_VERTICAL, 0),
-  m_HBox_Row(Gtk::ORIENTATION_HORIZONTAL, 0),
+  m_VBox_Row(Gtk::ORIENTATION_VERTICAL),
+  m_HBox_Row(Gtk::ORIENTATION_HORIZONTAL),
   m_Label_Row("a check box"),
   m_CheckButton_Row1(),
   m_CheckButton_Row2(),
@@ -284,7 +284,7 @@ void ExampleWindow::update_header_func(Gtk::ListBoxRow* row, Gtk::ListBoxRow* be
     // Create header if needed.
     if (!row->get_header())
     {
-      Gtk::Box* hbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0));
+      Gtk::Box* hbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL));
       Gtk::Label* label = Gtk::manage(new Gtk::Label("Header"));
       hbox->pack_start(*label, Gtk::PACK_SHRINK);
       Gtk::Button* button = Gtk::manage(new Gtk::Button("button"));
diff --git a/examples/book/popover/examplewindow.cc b/examples/book/popover/examplewindow.cc
index ca0ca75..60ec814 100644
--- a/examples/book/popover/examplewindow.cc
+++ b/examples/book/popover/examplewindow.cc
@@ -94,9 +94,9 @@ void ExampleWindow::configure_form_buttons()
   m_toggle_form_buttons[1].join_group(m_toggle_form_buttons[0]);
   m_toggle_form_buttons[2].join_group(m_toggle_form_buttons[0]);
 
-  m_format_buttons_box.pack_start(m_toggle_form_buttons[0], Gtk::PACK_EXPAND_WIDGET, 0);
-  m_format_buttons_box.pack_start(m_toggle_form_buttons[1], Gtk::PACK_EXPAND_WIDGET, 0);
-  m_format_buttons_box.pack_start(m_toggle_form_buttons[2], Gtk::PACK_EXPAND_WIDGET, 0);
+  m_format_buttons_box.pack_start(m_toggle_form_buttons[0], Gtk::PACK_EXPAND_WIDGET);
+  m_format_buttons_box.pack_start(m_toggle_form_buttons[1], Gtk::PACK_EXPAND_WIDGET);
+  m_format_buttons_box.pack_start(m_toggle_form_buttons[2], Gtk::PACK_EXPAND_WIDGET);
 
   m_format_buttons_box.set_hexpand();
 
diff --git a/examples/others/cellrenderercustom/popupentry.cc 
b/examples/others/cellrenderercustom/popupentry.cc
index 42b76e8..424185f 100644
--- a/examples/others/cellrenderercustom/popupentry.cc
+++ b/examples/others/cellrenderercustom/popupentry.cc
@@ -32,7 +32,7 @@ PopupEntry::PopupEntry(const Glib::ustring& path)
   entry_            (0),
   editing_canceled_ (false)
 {
-  Gtk::Box *const hbox = new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0);
+  Gtk::Box *const hbox = new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL);
   add(*Gtk::manage(hbox));
 
   entry_ = new Gtk::Entry();