From fb6c6c85bf73efa78e60d61546d3df7adcf04f5a Mon Sep 17 00:00:00 2001
From: Alexander Mikhaylenko <alexm@gnome.org>
Date: Thu, 20 May 2021 14:38:33 +0500
Subject: [PATCH] checkbutton: Don't allow to uncheck radios by activating them

Do the same check as when clicking.
---
 gtk/gtkcheckbutton.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/gtk/gtkcheckbutton.c b/gtk/gtkcheckbutton.c
index e9a30a1ce3..bc4a4c5d04 100644
--- a/gtk/gtkcheckbutton.c
+++ b/gtk/gtkcheckbutton.c
@@ -475,10 +475,14 @@ gtk_check_button_focus (GtkWidget         *widget,
 }
 
 static void
-gtk_check_button_real_activate (GtkCheckButton *check_button)
+gtk_check_button_real_activate (GtkCheckButton *self)
 {
-  gtk_check_button_set_active (check_button,
-                               !gtk_check_button_get_active (check_button));
+  GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (self);
+
+  if (priv->active && (priv->group_prev || priv->group_next))
+    return;
+
+  gtk_check_button_set_active (self, !gtk_check_button_get_active (self));
 }
 
 static void