diff -r 000000000000 -r 804d8803eade ui/motif/button.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/motif/button.h	Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,69 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2014 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef BUTTON_H
+#define	BUTTON_H
+
+#include "../ui/button.h"
+#include "toolkit.h"
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    UcxList *buttons;
+    Widget  current;
+    int     ref;
+} RadioButtonGroup;
+
+typedef struct {
+    UiObject         *obj;
+    ui_callback      callback;
+    void             *userdata;
+    RadioButtonGroup *group;
+} RadioEventData;
+
+// wrapper
+int64_t ui_toggle_button_get(UiInteger *i);
+void ui_toggle_button_set(UiInteger *i, int64_t value);
+void ui_toggle_button_callback(
+        Widget widget,
+        UiEventData *data,
+        XmToggleButtonCallbackStruct *e);
+void ui_push_button_callback(Widget widget, UiEventData *event, XtPointer d);
+
+int64_t ui_radiobutton_get(UiInteger *value);
+void ui_radiobutton_set(UiInteger *value, int64_t i);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* BUTTON_H */
+