diff --git a/examples/application10/exampleappwin.c b/examples/application10/exampleappwin.c
index d5d9be19d6..1e8eaf7327 100644
--- a/examples/application10/exampleappwin.c
+++ b/examples/application10/exampleappwin.c
@@ -22,9 +22,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -36,8 +36,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -153,15 +151,13 @@ update_lines (ExampleAppWindow *win)
 }
 
 static void
-visible_child_changed (GObject    *stack,
-                       GParamSpec *pspec)
+visible_child_changed (GObject          *stack,
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
   update_words (win);
   update_lines (win);
diff --git a/examples/application7/exampleappwin.c b/examples/application7/exampleappwin.c
index f7f7d15d88..38ec027128 100644
--- a/examples/application7/exampleappwin.c
+++ b/examples/application7/exampleappwin.c
@@ -16,9 +16,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -30,8 +30,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -48,16 +46,13 @@ search_text_changed (GtkEntry *entry)
 }
 
 static void
-visible_child_changed (GObject    *stack,
-                       GParamSpec *pspec)
+visible_child_changed (GObject          *stack,
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
-
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
 }
 
diff --git a/examples/application8/exampleappwin.c b/examples/application8/exampleappwin.c
index d299f341fe..41d4df657b 100644
--- a/examples/application8/exampleappwin.c
+++ b/examples/application8/exampleappwin.c
@@ -20,9 +20,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -34,8 +34,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -119,16 +117,13 @@ done:
 }
 
 static void
-visible_child_changed (GObject    *stack,
-                       GParamSpec *pspec)
+visible_child_changed (GObject          *stack,
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
-
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
   update_words (win);
 }
diff --git a/examples/application9/exampleappwin.c b/examples/application9/exampleappwin.c
index 8911fa52f9..7d19b980e2 100644
--- a/examples/application9/exampleappwin.c
+++ b/examples/application9/exampleappwin.c
@@ -22,9 +22,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -36,8 +36,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -153,15 +151,13 @@ update_lines (ExampleAppWindow *win)
 }
 
 static void
-visible_child_changed (GObject    *stack,
-                       GParamSpec *pspec)
+visible_child_changed (GObject          *stack,
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
   update_words (win);
   update_lines (win);