Hi Andy,
I couldn't understand the meaning of serializeEvent.
But still I simply tried the following in the socket source callback from
GLib.
GdkEvent event;
memset(&event, 0, sizeof(GdkEvent));
event.key.type = GDK_KEY_PRESS;
event.key.keyval = GDK_Tab;
event.key.send_event = TRUE;
gdk_threads_enter();
printf("Sending Tab event to gtk_idle_add_full\n");
gtk_idle_add_full(G_PRIORITY_DEFAULT,
(GSourceFunc)gtk_main_do_event, NULL, &event, NULL);
gdk_threads_leave();
This also lead to the same behaviour. The WebKit Gtk main window freezed
from responding for further events.
I also tried replacing gtk_idle_add_full with g_idle_add_full. Still same
behaviour.
Please help me if i'm missing something.
Kind regards,
Bharath
On Mon, Jul 12, 2010 at 12:33 PM, Andy Stewart <[email protected]>wrote:
> Hi Bharathwaaj,
>
> I'm a developer of gtk2hs (Haskell binding to gtk+).
>
> I have fix same problem (WebKit widget and GdkEvent) at Haskell side.
> (
> https://patch-tag.com/r/AndyStewart/gtk-serialized-event/snapshot/current/content/pretty/Graphics/UI/Gtk/Gdk/SerializedEvent.hsc
> )
> This is screenshot :
> http://farm5.static.flickr.com/4080/4758242386_5230d3d54d_b.jpg
>
> Though i use Haskell, but i can explain how to pass GdkEvent from one
> process to another.
>
> Below are step:
>
> 1) Serialize GdkEvent at *server* process.
> 2) Then send SerializeEvent over the network
> 3) When *client* process receive SerializeEvent from network, re-build
> GdkEvent.
> 4) Then you can use gtk_main_do_event propagate same event on current
> focus widget, or use gtk_widget_event propagate event on specify widget.
>
> Only trick is you need use idle_add_full wrap gtk_main_do_event to make
> sure gtk_main_do_event running in *main thread* and not *listen event
> thread*.
>
> Hope above will help you. :)
>
> Cheers,
>
> -- Andy
>
> Bharathwaaj Srinivasan <[email protected]> writes:
>
> > Hi,
> >
> > Is it possible to send GdkEvents to a GtkWidget from the application?
> >
> > Currently I've a GIOChannel which is listening to a socket and the
> GSource is attached to the Glib
> > main loop.
> >
> > g_type_init();
> > g_thread_init(NULL);
> > gdk_threads_init();
> > gdk_threads_enter();
> > gtk_init(NULL, NULL);
> >
> > channel = g_io_channel_unix_new (fd);
> > g_io_channel_set_encoding (channel, NULL, NULL);
> > g_io_channel_set_buffered (channel, FALSE);
> >
> > source = g_io_create_watch (channel, G_IO_IN);
> > g_source_set_priority (source, G_PRIORITY_DEFAULT);
> > g_source_set_can_recurse (source, TRUE);
> > g_source_set_callback (source, (GSourceFunc) event_handler, NULL,
> NULL);
> > g_source_attach (source, NULL);
> >
> > g_source_unref (source);
> > g_io_channel_unref(channel);
> >
> > gtk_main();
> > gdk_threads_leave();
> >
> > GdkEvents (Keyboard events) are passed from say another process by
> writing to the socket fd.
> >
> > Glib calls the callback "event_handler" for data available to read. The
> event_handler callback reads
> > the GdkEvent passed by
> > another process and calls gtk_main_do_event to pass the event to the
> widget.
> >
> > But this doesn't work and the application freezes.
> >
> > I use gdk_threads_enter and gdk_threads_leave in the callback and before
> gtk_main for making gtk
> > thread aware as the
> > callback comes from Glib.
> >
> > Kindly help me in providing a mechanism to pass GdkEvents from the top.
> If this is not possible,
> > please explain why.
> >
> > The main purpose for which I need this is I'm using GtkWebKit and I send
> Tab key event to make the
> > focus move to the next
> > element in the Webview.
> >
> > Events are being fed from another process.
> >
> > Kind regards,
> > Bharath
> >
> > _______________________________________________
> > gtk-list mailing list
> > [email protected]
> > http://mail.gnome.org/mailman/listinfo/gtk-list
>
> _______________________________________________
> gtk-list mailing list
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