diff -r 36f1581b43e2 -r 40dbf1a7526a application/main.c
--- a/application/main.c	Sun Jan 24 12:39:05 2016 +0100
+++ b/application/main.c	Sun Jan 24 18:47:39 2016 +0100
@@ -82,6 +82,10 @@
     printf("click[%d](%d,%d)\n", me->type, me->x, me->y);
 }
 
+void window_close(UiEvent *event, void *data) {
+    printf("window close\n");
+}
+
 int main(int argc, char** argv) { 
     ui_init("app1", argc, argv);
     
@@ -101,6 +105,7 @@
     ui_toolbar_add_default("button2");
     
     UiObject *obj = ui_simplewindow("Test", NULL);
+    ui_context_closefunc(obj->ctx, window_close, NULL);
     //UIWIDGET w = ui_drawingarea(obj, draw, NULL);
     //ui_mouse_handler(obj, w, click, NULL);
     
@@ -116,14 +121,11 @@
     ui_button(obj, "ABC", action_button2, NULL);
     ui_newline(obj);
     
-    ui_radiobutton(obj, "Radio1", &radio);
-    ui_radiobutton(obj, "Radio2", &radio);
-    ui_radiobutton(obj, "Radio3", &radio);
+    //ui_radiobutton(obj, "Radio1", &radio);
+    //ui_radiobutton(obj, "Radio2", &radio);
+    //ui_radiobutton(obj, "Radio3", &radio);
     
     
-    ui_layout_vexpand(obj, TRUE);
-    ui_space(obj);
-    
     ui_end(obj);
 //*/