def _handle_mouse_button_release(self, widget, event):
"""
Forward button release information to the flow graph.
"""
self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK
def _handle_mouse_button_release(self, widget, event):
"""
Forward button release information to the flow graph.
"""
self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK