<property name="events">GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_STRUCTURE_MASK</property>
<signal name="expose_event" handler="on_puzzlegrid_expose_event"/>
<signal name="button_press_event" handler="on_puzzlegrid_button_press_event"/>
<property name="events">GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_STRUCTURE_MASK</property>
<signal name="expose_event" handler="on_puzzlegrid_expose_event"/>
<signal name="button_press_event" handler="on_puzzlegrid_button_press_event"/>