[dia] Don't use deprecated function gtk_object_set().

[Hans Breuer <hans src gnome org>]

commit e81adadcf00ed1ac7dccd87473eee8ace25f60d2
Author: Adam Buchbinder <adam buchbinder gmail com>
Date:   Tue Jul 28 15:27:20 2009 -0400

    Don't use deprecated function gtk_object_set().
    
    Replaced gtk_object_set(GTK_OBJECT(foo),...) with g_object_set(foo,...):
    http://library.gnome.org/devel/gtk/stable/GtkObject.html#gtk-object-set
    
    Signed-off-by: Hans Breuer <hans breuer org>

 app/sheets_dialog_callbacks.c |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)
---
diff --git a/app/sheets_dialog_callbacks.c b/app/sheets_dialog_callbacks.c
index 9aa9768..9b23e06 100644
--- a/app/sheets_dialog_callbacks.c
+++ b/app/sheets_dialog_callbacks.c
@@ -160,26 +160,26 @@ on_sheets_dialog_object_button_toggled(GtkToggleButton *togglebutton,
     g_object_set_data(G_OBJECT(table_sheets), "active_optionmenu",
                       optionmenu_left);
     button = lookup_widget(sheets_dialog, "button_copy");
-    gtk_object_set(GTK_OBJECT(button), "label", _("Copy ->"), NULL);
+    g_object_set(button, "label", _("Copy ->"), NULL);
     button = lookup_widget(sheets_dialog, "button_copy_all");
-    gtk_object_set(GTK_OBJECT(button), "label", _("Copy All ->"), NULL);
+    g_object_set(button, "label", _("Copy All ->"), NULL);
     button = lookup_widget(sheets_dialog, "button_move");
-    gtk_object_set(GTK_OBJECT(button), "label", _("Move ->"), NULL);
+    g_object_set(button, "label", _("Move ->"), NULL);
     button = lookup_widget(sheets_dialog, "button_move_all");
-    gtk_object_set(GTK_OBJECT(button), "label", _("Move All ->"), NULL);
+    g_object_set(button, "label", _("Move All ->"), NULL);
   }
   else
   {
     g_object_set_data(G_OBJECT(table_sheets), "active_optionmenu",
                       optionmenu_right);
     button = lookup_widget(sheets_dialog, "button_copy");
-    gtk_object_set(GTK_OBJECT(button), "label", _("<- Copy"), NULL);
+    g_object_set(button, "label", _("<- Copy"), NULL);
     button = lookup_widget(sheets_dialog, "button_copy_all");
-    gtk_object_set(GTK_OBJECT(button), "label", _("<- Copy All"), NULL);
+    g_object_set(button, "label", _("<- Copy All"), NULL);
     button = lookup_widget(sheets_dialog, "button_move");
-    gtk_object_set(GTK_OBJECT(button), "label", _("<- Move"), NULL);
+    g_object_set(button, "label", _("<- Move"), NULL);
     button = lookup_widget(sheets_dialog, "button_move_all");
-    gtk_object_set(GTK_OBJECT(button), "label", _("<- Move All"), NULL);
+    g_object_set(button, "label", _("<- Move All"), NULL);
   }
 
   sheet_left = sheet_left ? sheet_left : "";  /* initial value can be NULL */