keybinding.py 文件源码

def grab(self, key):
        if self.display == None:
            return False
        accelerator = key
        accelerator = accelerator.replace("<Super>", "<Mod4>")
        keyval, modifiers = Gtk.accelerator_parse(accelerator)
        if not accelerator or (not keyval and not modifiers):
            self.keycode = None
            self.modifiers = None
            return False

        self.keytext = key
        self.keycode = self.get_keycode(keyval)
        self.modifiers = int(modifiers)

        catch = error.CatchError(error.BadAccess)
        for ignored_mask in self.ignored_masks:
            mod = modifiers | ignored_mask
            result = self.window.grab_key(self.keycode, mod, True, X.GrabModeAsync, X.GrabModeSync, onerror=catch)
            result = self.window.grab_key(134, mod, True, X.GrabModeAsync, X.GrabModeSync, onerror=catch)
        self.display.flush()
        # sync has been blocking. Don't know why.
        #self.display.sync()
        if catch.get_error():
            return False
        return True