https://bugs.freedesktop.org/show_bug.cgi?id=91750
--- Comment #6 from Jonas Ådahl <[email protected]> --- Yujie: as indirectly stated by Pekka, my example was incomplete. You would also need to dispatch pending events before the wl_display_prepare_read(display) call. This makes it, ignoring error handling, more or less: wl_surface_attach(); while (wl_display_prepare_read_queue(display, queue) < 0) wl_display_dispatch_queue_pending(display, queue); window->callback = wl_surface_frame(window->surface); wl_proxy_set_queue(window->callback,queue2); wl_callback_add_listener(window->callback, &frame_listener, window); wl_display_cancel_read(display); wl_surface_commit(window->surface); This has the side effect that events already in the queue will be always dispatched before the frame is requested. This may have unwanted effects, so please consider whether this is Ok in your architecture. If it is not, you need to make sure that the above code is done after all events on the queue has been dispatched. -- You are receiving this mail because: You are the assignee for the bug.
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