Ich suchte nach einem Beispiel für die globale Tastenkombination von Python Xlib, die mit gtk3 funktionieren würde, genau wie es für gtk2 bei getan wirdhttp://www.siafoo.net/snippet/239. Sehr ähnlicher Code hier:

from Xlib.display import Display
from Xlib import X
import gtk.gdk
import threading
import gobject

class GlobalKeyBinding (gobject.GObject, threading.Thread):
    __gsignals__ = {
            'activate': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
        }


    def __init__ (self):
        gobject.GObject.__init__ (self)
        threading.Thread.__init__ (self)
        self.setDaemon (True)

        self.keymap = gtk.gdk.keymap_get_default ()
        self.display = Display ()
        self.screen = self.display.screen ()
        self.root = self.screen.root

        self.map_modifiers ()
        self.keybindings={}
        self.current_signal=None

    def map_modifiers (self):
        gdk_modifiers = (gtk.gdk.CONTROL_MASK, gtk.gdk.SHIFT_MASK, gtk.gdk.MOD1_MASK,
                         gtk.gdk.MOD3_MASK, gtk.gdk.MOD4_MASK, gtk.gdk.MOD5_MASK,
                         gtk.gdk.SUPER_MASK, gtk.gdk.HYPER_MASK)
        self.known_modifiers_mask = 0
        for modifier in gdk_modifiers:
            self.known_modifiers_mask |= modifier

    def add_grab_key(self,accelerator,signal):
        if not accelerator:
            return
        keyval,modifiers=gtk.accelerator_parse(accelerator)
        if not keyval or not modifiers:
            return
        keycode=self.keymap.get_entries_for_keyval(keyval)[0][0]
        self.keybindings[signal]=[accelerator,
            keycode,
            int (modifiers)]
                #grab_key operation forces X to exclusivelly send given keycode (like apostrophe char) to current X client (unless other X client grabbed it before).
                #`X.AnyModifier' parameter tells to register the keycode for all modifiers, thus Ctrl-', Alt-', Shift-', ' will all be sent to this X client.
                # given keyval is grabbed by current X client until `ungrab_key' is called.
        return self.root.grab_key (keycode, X.AnyModifier, True, X.GrabModeAsync, X.GrabModeSync)



    def ungrab (self):
        for signal in self.keybindings:
                    # ungrab_key ungrabs given keycode, that was grabbed by `grab_key'.
            self.root.ungrab_key (self.keybindings[signal][1],X.AnyModifier, self.root)
        self.keybindings={}

    def idle (self):
        if self.current_signal:
            gtk.gdk.threads_enter ()
            self.emit (self.current_signal)
            self.current_signal=None
            gtk.gdk.threads_leave ()
        return False

        #threading.Thread.start() method invokes this method.
    def run (self):
        self.running = True
        wait_for_release = False
        while self.running:
            event = self.display.next_event () # registered keycode(or probably rather event) has been received.
            if self.current_signal:
                self.display.allow_events (X.ReplayKeyboard, event.time)
                continue

            try:
                if not wait_for_release and event.type == X.KeyPress:
                    modifiers = event.state & self.known_modifiers_mask
                                        print modifiers, event.detail
                    for signal in self.keybindings:
                        if self.keybindings[signal][1] == event.detail and self.keybindings[signal][2] == modifiers:
                            self.this_signal=signal
                            this_keycode = self.keybindings[signal][1]
                            wait_for_release=True
                            break
                    if wait_for_release:
                        self.display.allow_events (X.AsyncKeyboard, event.time)
                    else:
                        self.display.allow_events (X.ReplayKeyboard, event.time)
                    continue
                elif wait_for_release and event.detail == this_keycode and event.type == X.KeyRelease:
                    wait_for_release = False
                    self.current_signal=self.this_signal
                    self.event_window=event.window
                    gobject.idle_add (self.idle)
                    self.display.allow_events (X.AsyncKeyboard, event.time)
                else:
                    self.display.allow_events (X.ReplayKeyboard, event.time)
            except:
                self.display.allow_events (X.ReplayKeyboard, event.time)
    def stop (self):
        print "stopping keybindings thread..."
        self.running = False
        self.ungrab ()
        self.display.close ()

# SAMPLE USAGE
def callback (keybinding):
    print 'Callback!'
    keybinding.stop()
    gtk.main_quit ()

def main():
    print "starting..."
    gtk.gdk.threads_init ()
    keybindings=GlobalKeyBinding()
    keybindings.add_grab_key('<Control>apostrophe','activate')
    keybindings.connect('activate',callback)
    keybindings.start () # let's thart the thread
    gtk.main ()

main()

Leider habe ich keine gefunden, daher habe ich beschlossen, sie erneut zu implementieren, um gtk3 (Ubuntu 12.04) zu verwenden. Unten ist das Ergebnis. Es hat keine Laufzeitfehler, aber leider keine Eingaben.

from Xlib.display import Display
from Xlib import X
from gi.repository import Gtk, Gdk, GObject
import threading

class GlobalKeyBinding (GObject.GObject, threading.Thread):
    __gsignals__ = {
            'activate': (GObject.SignalFlags.RUN_LAST, None, ()),
        }


    def __init__ (self):
        GObject.GObject.__init__ (self)
        threading.Thread.__init__ (self)
        self.setDaemon (True)

        self.keymap = Gdk.Keymap.get_default()
        self.display = Display ()
        self.screen = self.display.screen ()
        self.root = self.screen.root

        self.map_modifiers ()
        self.keybindings={}
        self.current_signal=None

    def map_modifiers (self):
        gdk_modifiers = (Gdk.ModifierType.CONTROL_MASK, Gdk.ModifierType.SHIFT_MASK, Gdk.ModifierType.MOD1_MASK,
                         Gdk.ModifierType.MOD3_MASK, Gdk.ModifierType.MOD4_MASK, Gdk.ModifierType.MOD5_MASK,
                         Gdk.ModifierType.SUPER_MASK, Gdk.ModifierType.HYPER_MASK)
        self.known_modifiers_mask = 0
        for modifier in gdk_modifiers:
            #print modifier,modifier+0
            self.known_modifiers_mask |= modifier

    def add_grab_key(self,accelerator,signal):
        if not accelerator:
            return
        keyval,modifiers=Gtk.accelerator_parse(accelerator)
        if not keyval or not modifiers:
            return
        #keycode=self.keymap.get_entries_for_keyval(keyval)[0][0]
                success, entries = self.keymap.get_entries_for_keyval(keyval)
                entry = [(int(i.keycode), i.group, i.level) for i in entries]
                if not entry:
                    raise TypeError("Invalid key name")

                keycode=entry[0][0]
        self.keybindings[signal]=[accelerator,
            keycode,
            int (modifiers)]
        return self.root.grab_key (keycode, X.AnyModifier, True, X.GrabModeAsync, X.GrabModeSync)



    def ungrab (self):
        for signal in self.keybindings:
            self.root.ungrab_key (self.keybindings[signal][1],X.AnyModifier, self.root)
        self.keybindings={}

    def idle (self):
        if self.current_signal:
            Gdk.threads_enter ()
            self.emit (self.current_signal)
            self.current_signal=None
            Gdk.threads_leave ()
        return False

    def run (self):
        self.running = True
        wait_for_release = False
        while self.running:
            event = self.display.next_event ()
            if self.current_signal:
                self.display.allow_events (X.ReplayKeyboard, event.time)
                continue

            try:
                if not wait_for_release and event.type == X.KeyPress:
                    modifiers = event.get_state() & self.known_modifiers_mask
                    print modifiers,event.get_state()
                    for signal in self.keybindings:
                        if self.keybindings[signal][1] == event.detail and self.keybindings[signal][2] == modifiers:
                            self.this_signal=signal
                            this_keycode = self.keybindings[signal][1]
                            wait_for_release=True
                            break
                    if wait_for_release:
                        self.display.allow_events (X.AsyncKeyboard, event.time)
                    else:
                        self.display.allow_events (X.ReplayKeyboard, event.time)
                    continue
                elif wait_for_release and event.detail == this_keycode and event.type == X.KeyRelease:
                    wait_for_release = False
                    self.current_signal=self.this_signal
                    self.event_window=event.window
                    GObject.idle_add (self.idle)
                    self.display.allow_events (X.AsyncKeyboard, event.time)
                else:
                    self.display.allow_events (X.ReplayKeyboard, event.time)
            except:
                self.display.allow_events (X.ReplayKeyboard, event.time)
    def stop (self):
        self.running = False
        self.ungrab ()
        self.display.close ()

# SAMPLE USAGE
def callback (keybinding):
    print 'Callback!'
    keybinding.stop()
    Gtk.main_quit ()

def main():
    print "starting..."
    Gdk.threads_init ()
    keybindings=GlobalKeyBinding()
    keybindings.add_grab_key('<Control>apostrophe','activate')
    keybindings.connect('activate',callback)
    print "keybindings go"
    keybindings.start () # let's thart the thread
    print "gtk go"
    Gtk.main ()

main()

Vielleicht haben Sie einige Ideen, wie es funktioniert?

Viele Grüße, Paul