_nixcommon.py 文件源码

def make_uinput():
    import fcntl, struct

    # Requires uinput driver, but it's usually available.
    uinput = open("/dev/uinput", 'wb')
    UI_SET_EVBIT = 0x40045564
    fcntl.ioctl(uinput, UI_SET_EVBIT, EV_KEY)

    UI_SET_KEYBIT = 0x40045565
    for i in range(256):
        fcntl.ioctl(uinput, UI_SET_KEYBIT, i)

    BUS_USB = 0x03
    uinput_user_dev = "80sHHHHi64i64i64i64i"
    axis = [0] * 64 * 4
    uinput.write(struct.pack(uinput_user_dev, b"Virtual Keyboard", BUS_USB, 1, 1, 1, 0, *axis))
    uinput.flush() # Without this you may get Errno 22: Invalid argument.

    UI_DEV_CREATE = 0x5501
    fcntl.ioctl(uinput, UI_DEV_CREATE)
    UI_DEV_DESTROY = 0x5502
    #fcntl.ioctl(uinput, UI_DEV_DESTROY)

    return uinput