Re: mouse motion events

[smso graduate hku hk]

I think you may try:

(1)
	...signal_motion_notify_event().connect
	(
		sigc::mem_fun(*this, &stest::motion_action),
		false // after = false
	);


(2)
	...add_events
	(
		Gdk::EXPOSURE_MASK
		| Gdk::POINTER_MOTION_MASK
		| Gdk::BUTTON_PRESS_MASK
		| Gdk::BUTTON_RELEASE_MASK
		| Gdk::BUTTON_MOTION_MASK
		| Gdk::POINTER_MOTION_HINT_MASK
		| Gdk::ENTER_NOTIFY_MASK
		| Gdk::LEAVE_NOTIFY_MASK
	);

(3)

If a widget which doesn't have native scrolling capability
is added to the Gtk::ScrolledWindow,
it is placed in the Gtk::Viewport of the Gtk::ScrolledWindow.

So you may try (1) and (2) above with the Gtk::Viewport.


Blind guess only!
Best regards.