The GtkRadiant sources as originally released under the GPL license.

libs/gtkutil/button.h

@@ -0,0 +1,43 @@
+/*
+Copyright (C) 2001-2006, William Joseph.
+All Rights Reserved.
+
+This file is part of GtkRadiant.
+
+GtkRadiant is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+GtkRadiant is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#if !defined(INCLUDED_GTKUTIL_BUTTON_H)
+#define INCLUDED_GTKUTIL_BUTTON_H
+
+typedef struct _GtkButton GtkButton;
+typedef struct _GtkToggleButton GtkToggleButton;
+typedef struct _GtkRadioButton GtkRadioButton;
+typedef int gint;
+typedef gint gboolean;
+typedef unsigned int guint;
+class Callback;
+
+void button_connect_callback(GtkButton* button, const Callback& callback);
+guint toggle_button_connect_callback(GtkToggleButton* button, const Callback& callback);
+
+void button_set_icon(GtkButton* button, const char* icon);
+void toggle_button_set_active_no_signal(GtkToggleButton* item, gboolean active);
+
+void radio_button_set_active(GtkRadioButton* radio, int index);
+void radio_button_set_active_no_signal(GtkRadioButton* radio, int index);
+int radio_button_get_active(GtkRadioButton* radio);
+
+#endif