我可以通过以下方式确定当前鼠标指针的位置:
from Xlib.display import Display
display = Display()
qp = display.screen().root.query_pointer()
print(qp.root_x, qp.root_y)
如何也通过Xlib
来获得当前鼠标按钮的状态,例如左/右按钮的按下/释放? (或者,如果不可能,为什么不呢?)
答案 0 :(得分:1)
您的X窗口必须支持XInput扩展名。 Real X可以使用,但是如果X服务器不支持VNC服务器等扩展名,则无法使用鼠标键。
如果X服务器支持它,则可以进入鼠标状态,如下所示:
from Xlib.display import Display
from Xlib.ext import xinput
display = Display()
import time
while True:
buttons = []
for device_info in display.xinput_query_device(xinput.AllDevices).devices:
if not device_info.enabled:
continue
if xinput.ButtonClass not in [ device_class.type for device_class in device_info.classes ]:
continue
buttons.append(device_info)
for button in buttons:
for device_class in button.classes:
if xinput.ButtonClass == device_class.type:
if device_class.state[0]:
print('Device {name} - Primary button down'.format(name=button.name))
time.sleep(1)
我不确定100%的位置,因为在任何地方都找不到文档,但是我很确定device_class.state [0]是主要的(向左键),1是中间的,2是右键。
您可能可以找到the button number assignment spec here
编辑:
为什么有两个for循环-首先,我在永远循环之外编写了“ buttons”部分。但是,“嘿,您可以随时插入鼠标。”
您会发现,有很多设备,包括“虚拟”设备。在笔记本电脑上,触摸板也可以用作按钮,因此在您的应用中,如果您想了解真正的鼠标按钮,则可能必须从名称中选择设备。同样,没有好的文档,因此您可能必须解密设备类对象。您可以在/usr/lib/python3/dist-packages/Xlib/ext/xinput.py中找到xinput。 (如果您使用的是Python2,请相应地进行调整。)祝您好运。
答案 1 :(得分:0)
您可以查看this python-xlib示例。
from __future__ import print_function
import sys
import os
# Change path so we find Xlib
sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
from Xlib import X, XK, display
from Xlib.ext import record
from Xlib.protocol import rq
local_dpy = display.Display()
record_dpy = display.Display()
def lookup_keysym(keysym):
for name in dir(XK):
if name[:3] == "XK_" and getattr(XK, name) == keysym:
return name[3:]
return "[%d]" % keysym
def record_callback(reply):
if reply.category != record.FromServer:
return
if reply.client_swapped:
print("* received swapped protocol data, cowardly ignored")
return
if not len(reply.data) or reply.data[0] < 2:
# not an event
return
data = reply.data
while len(data):
event, data = rq.EventField(None).parse_binary_value(
data, record_dpy.display, None, None)
if event.type in [X.KeyPress, X.KeyRelease]:
pr = event.type == X.KeyPress and "Press" or "Release"
keysym = local_dpy.keycode_to_keysym(event.detail, 0)
if not keysym:
print("KeyCode%s" % pr, event.detail)
else:
print("KeyStr%s" % pr, lookup_keysym(keysym))
if event.type == X.KeyPress and keysym == XK.XK_Escape:
local_dpy.record_disable_context(ctx)
local_dpy.flush()
return
elif event.type == X.ButtonPress:
print("ButtonPress", event.detail)
elif event.type == X.ButtonRelease:
print("ButtonRelease", event.detail)
elif event.type == X.MotionNotify:
print("MotionNotify", event.root_x, event.root_y)
# Check if the extension is present
if not record_dpy.has_extension("RECORD"):
print("RECORD extension not found")
sys.exit(1)
r = record_dpy.record_get_version(0, 0)
print("RECORD extension version %d.%d" % (r.major_version, r.minor_version))
# Create a recording context; we only want key and mouse events
ctx = record_dpy.record_create_context(
0,
[record.AllClients],
[{
'core_requests': (0, 0),
'core_replies': (0, 0),
'ext_requests': (0, 0, 0, 0),
'ext_replies': (0, 0, 0, 0),
'delivered_events': (0, 0),
'device_events': (X.KeyPress, X.MotionNotify),
'errors': (0, 0),
'client_started': False,
'client_died': False,
}])
# Enable the context; this only returns after a call to record_disable_context,
# while calling the callback function in the meantime
record_dpy.record_enable_context(ctx, record_callback)
# Finally free the context
record_dpy.record_free_context(ctx)