Created attachment 297066 [details]
accessible-event listener

Steps to reproduce:
1. Launch gtk3-demo's Printing demo
2. Launch the attached accessible event listener in a terminal
3. Cause the tooltip of the Pages radio button on the General page to be shown

Expected results: An object with ROLE_TOOL_TIP would emit an accessible event.

Actual results: An object of ROLE_LABEL emits the accessible event.

Sample output from the attached listener, showing and then hiding the tooltip:

~~~~~~
Gtk+ 2
~~~~~~
object:state-changed:showing(1, 0, 0)
	source: [tool tip | Specify one or more page ranges,
 e.g. 1-3,7,11]
	host_application: [application | gtk-demo]
object:state-changed:showing(0, 0, 0)
	source: [tool tip | Specify one or more page ranges,
 e.g. 1-3,7,11]
	host_application: [application | gtk-demo]

~~~~~~
Gtk+ 3
~~~~~~

object:state-changed:showing(1, 0, 0)
	source: [label | Specify one or more page ranges,
 e.g. 1-3,7,11]
	host_application: [application | gtk3-demo]
object:state-changed:showing(0, 0, 0)
	source: [label | Specify one or more page ranges,
 e.g. 1-3,7,11]
	host_application: [application | gtk3-demo]


Note: This is a change/regression in Gtk+ 3, but it was only semi-recently (perhaps in the past year?) introduced. At the moment I don't have time to track down when (sorry!!).