Problem build GdkEventKey on gtkdfb

[Matteo Mazzini <matteo mazzini email it>]

Hi to everybody,

i'm developing a gtkmm application on embedded system.
and i need to build a GdkEventKey to simulate a keyboard when i receive characters from a serial line.

Before all, to try build a GdkEventKey i had write a simple test program with a simple Gtk::Window, a callback for key press event, a callback where i build the event and put them into the event loop after a timeout.

Here the main:
========================================================
int main(int argc, char ** argv)
{
	LOGGER.debug("gtestMain");
	
	Gtk::Main _gtkMain(argc, argv);

	_testWin = new Gtk::Window();	
	
	Gdk::Event::set_show_events(true);


	_testWin->signal_key_press_event().connect(sigc::ptr_fun(onKeyPressedEvent), false);
		
	Glib::signal_timeout().connect(sigc::ptr_fun(onTimeout), 5000);
			
	LOGGER.info("Main before gtk event......");

	_testWin->set_title("Frame Example");
	_testWin->set_size_request(300, 200);
	_testWin->set_decorated(false);
	_testWin->set_has_frame(true);
	_testWin->set_position(Gtk::WIN_POS_CENTER_ALWAYS);

	_testWin->show();

	Glib::RefPtr<Gdk::Window> f_rptr = _testWin->get_frame();

	_gtkMain.run();				

	return 0;
}



Here the callback where i build the event after timeout:
========================================================
bool onTimeout()
{

	LOGGER.debug("=====> Main::build fake GtkEventKey ====");

	GdkEvent* event = NULL;
	event = gdk_event_new(GDK_KEY_PRESS);
	LOGGER.debug("Main == key PRESSED event");

	event->key.send_event = 1;
	event->key.state = 0;
	event->key.length = 1;
	event->key.group = 0;
	event->key.time = time (NULL);

	event->key.keyval = 53;
	event->key.hardware_keycode = 14;
	event->key.string = gdk_keyval_name(53);

	Glib::RefPtr<Gdk::Window> f_rptr = _testWin->get_frame();	

	event->key.window = f_rptr->gobj();	
	
	Gdk::Event gdkev(event);
	gdkev.set_screen(_testWin->get_screen());	

	gdkev.put();
	
	return true;
}


Here the callback for key press:
========================================================

bool onKeyPressedEvent(GdkEventKey *event)
{
	
	LOGGER.debug("=====> Main::onKeyPressedEvent START <=========");
	
	LOGGER.debug(Format("Dump of event structure: type[%$] window[%$] send event[%$] time[%$] state[%$] keyval[%$] length[%$] string[%$] hardware_keycode[%$] group[%$]")
												  
	%event->type %ptrtoa(event->window) %event->send_event %event->time %event->state %event->keyval %event->length %event->string  %event->hardware_keycode %event->group);

	LOGGER.debug("=====> Main::onKeyPressedEvent END <=========");

	return false;
}

 
The problem is that i tested this on xorg and on directfb, on xorg all go well, after i put the event into main event loop i can see on screen the onKeyPressedEvent callback log, instead on directfb after i put the event into the main event loop i never see the onKeyPressedEvent callback log.

Could anyone help me on what happen?

Thank you very much for your time and help.

Matteo