To receive an event if one of the keys is pressed you have to use the key-pressed-event like the example below:
examplewindow.h
//$Id: examplewindow.h,v 1.1 2003/11/03 09:29:56 murrayc Exp $ -*- c++ -*-
/* gtkmm example Copyright (C) 2002 gtkmm development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef GTKMM_EXAMPLEWINDOW_H
#define GTKMM_EXAMPLEWINDOW_H
#include <hildon-libsmm/window.h>
#include <gtkmm.h>
class ExampleWindow : public Hildon::Window
{
public:
ExampleWindow();
virtual ~ExampleWindow();
protected:
//Signal handlers:
virtual bool on_key_pressed(GdkEventKey* key);
};
#endif //GTKMM_EXAMPLEWINDOW_H
examplewindow.cc
//$Id: examplewindow.cc,v 1.5 2004/03/25 14:35:34 murrayc Exp $ -*- c++ -*-
/* gtkmm example Copyright (C) 2002 gtkmm development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "examplewindow.h"
#include <gtkmm.h>
#include <hildon-libsmm/banner.h>
ExampleWindow::ExampleWindow()
{
signal_key_press_event().connect(
sigc::mem_fun(*this, &ExampleWindow::on_key_pressed) );
show_all();
}
ExampleWindow::~ExampleWindow()
{
}
bool ExampleWindow::on_key_pressed(GdkEventKey* event)
{
switch (event->keyval)
{
case GDK_Up:
Hildon::Banner::show_information(*this, "Key Up");
break;
case GDK_Down:
Hildon::Banner::show_information(*this, "Key Down");
break;
case GDK_Left:
Hildon::Banner::show_information(*this, "Key Left");
break;
case GDK_Right:
Hildon::Banner::show_information(*this, "Key Right");
break;
case GDK_Return:
Hildon::Banner::show_information(*this, "Key Select");
break;
case GDK_Escape:
Hildon::Banner::show_information(*this, "Key Cancel");
break;
case GDK_F4:
Hildon::Banner::show_information(*this, "Open menu");
break;
case GDK_F5:
Hildon::Banner::show_information(*this, "Show Home");
break;
case GDK_F6:
Hildon::Banner::show_information(*this, "Full screen");
break;
case GDK_F7:
Hildon::Banner::show_information(*this, "Increase");
break;
case GDK_F8:
Hildon::Banner::show_information(*this, "Decrease");
break;
default:
Hildon::Banner::show_information(*this, "Other key");
}
// Return true would stop the event now
return false;
}
main.cc
//$Id: main.cc,v 1.1 2003/11/03 09:29:56 murrayc Exp $ -*- c++ -*-
/* gtkmm example Copyright (C) 2002 gtkmm development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <hildon-libsmm/program.h>
#include <gtkmm/main.h>
#include "examplewindow.h"
/* This is the C++ version of the example in the tutorial */
int main(int argc, char *argv[])
{
/* Initialize the GTKmm. */
Gtk::Main kit(&argc, &argv);
/* Create the hildon program and setup the title */
Hildon::Program program;
Glib::set_application_name("Hardware key example");
/* Create Window and set it to Program */
ExampleWindow window;
program.add_window(window);
/* Begin the main application */
window.show_all();
kit.run(window);
/* Exit */
return 0;
}
