[gtk+] color button: Stop connecting to ::delete-event

[Matthias Clasen <matthiasc src gnome org>]

commit c86e8d0e6004c71d95a819a948ac726e9f57a218
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 31 11:40:00 2017 -0500

    color button: Stop connecting to ::delete-event
    
    We can just use GtkWindow::hide-on-close.

 gtk/gtkcolorbutton.c |   13 +------------
 1 files changed, 1 insertions(+), 12 deletions(-)
---
diff --git a/gtk/gtkcolorbutton.c b/gtk/gtkcolorbutton.c
index 3f2de51..fe8e95a 100644
--- a/gtk/gtkcolorbutton.c
+++ b/gtk/gtkcolorbutton.c
@@ -490,16 +490,6 @@ gtk_color_button_new_with_rgba (const GdkRGBA *rgba)
 }
 
 static gboolean
-dialog_delete_event (GtkWidget *dialog,
-                     GdkEvent  *event,
-                     gpointer   user_data)
-{
-  g_signal_emit_by_name (dialog, "response", GTK_RESPONSE_CANCEL);
-
-  return TRUE;
-}
-
-static gboolean
 dialog_destroy (GtkWidget *widget,
                 gpointer   data)
 {
@@ -550,6 +540,7 @@ ensure_dialog (GtkColorButton *button)
   parent = gtk_widget_get_toplevel (GTK_WIDGET (button));
 
   priv->cs_dialog = dialog = gtk_color_chooser_dialog_new (priv->title, NULL);
+  gtk_window_set_hide_on_close (GTK_WINDOW (dialog), TRUE);
 
   if (gtk_widget_is_toplevel (parent) && GTK_IS_WINDOW (parent))
   {
@@ -564,8 +555,6 @@ ensure_dialog (GtkColorButton *button)
                     G_CALLBACK (dialog_response), button);
   g_signal_connect (dialog, "destroy",
                     G_CALLBACK (dialog_destroy), button);
-  g_signal_connect (dialog, "delete-event",
-                    G_CALLBACK (dialog_delete_event), button);
 }