Build the INPUT structure for the action

def GetInput(self):
        "Build the INPUT structure for the action"
        actions = 1
        # if both up and down
        if self.up and self.down:
            actions = 2

        inputs = (INPUT * actions)()

        vk, scan, flags = self._get_key_info()

        for inp in inputs:
            inp.type = INPUT_KEYBOARD

            inp._.ki.wVk = vk
            inp._.ki.wScan = scan
            inp._.ki.dwFlags |= flags

        # if we are releasing - then let it up
        if self.up:
            inputs[-1]._.ki.dwFlags |= KEYEVENTF_KEYUP

        return inputs