Python Check if mouse clicked

问题

so I'm trying to build a short script in Python. What I want to do is that if the mouse is clicked, the mouse will reset to some arbitrary position (right now the middle of the screen). I'd like this to run in the background, so it could work in in the OS (most likely Chrome, or some web browser). I'd also like it so that a user could hold down a certain button (say ctrl) and they could click away and not have the position reset. This way they could close the script without frustration.

I'm pretty sure I know how to do this, but I'm not sure as to what library to use. I'd prefer if it was cross platform, or at least Windows + Mac. Here's my code so far:

#! python3
# resetMouse.py - resets mouse on click - usuful for students with
# cognitive disabilities.

import pymouse

width, height = m.screen_size()
midWidth = (width + 1) / 2
midHeight = (height + 1) / 2

m = PyMouse()
k = PyKeyboard()


def onClick():
    m.move(midWidth, midHeight)


try:
    while True:
        # if button is held down:
            # continue
        # onClick()
except KeyboardInterrupt:
    print('\nDone.')

回答1:

I was able to make it work just with win32api. It works when clicking on any window.

import win32api
import time

width = win32api.GetSystemMetrics(0)
height = win32api.GetSystemMetrics(1)
midWidth = int((width + 1) / 2)
midHeight = int((height + 1) / 2)

state_left = win32api.GetKeyState(0x01)  # Left button down = 0 or 1. Button up = -127 or -128
while True:
    a = win32api.GetKeyState(0x01)
    if a != state_left:  # Button state changed
        state_left = a
        print(a)
        if a < 0:
            print('Left Button Pressed')
        else:
            print('Left Button Released')
            win32api.SetCursorPos((midWidth, midHeight))
    time.sleep(0.001)

回答2:

Try this

from pynput.mouse import Listener


def on_move(x, y):
    print(x, y)


def on_click(x, y, button, pressed):
    print(x, y, button, pressed)


def on_scroll(x, y, dx, dy):
    print(x, y, dx, dy)


with Listener(on_move=on_move, on_click=on_click, on_scroll=on_scroll) as listener:
    listener.join()

回答3:

I was able to make it work for Windows using pyHook and win32api:

import win32api, pyHook, pythoncom

width = win32api.GetSystemMetrics(0)
height = win32api.GetSystemMetrics(1)
midWidth = (width + 1) / 2
midHeight = (height + 1) / 2 

def moveCursor(x, y):
    print('Moving mouse')
    win32api.SetCursorPos((x, y))

def onclick(event):
    print(event.Position)
    moveCursor(int(midWidth), int(midHeight))
    return True 

try:
    hm = pyHook.HookManager()
    hm.SubscribeMouseAllButtonsUp(onclick)
    hm.HookMouse()
    pythoncom.PumpMessages()
except KeyboardInterrupt:
    hm.UnhookMouse()
    print('\nDone.')
    exit()

回答4:

The following code worked perfectly for me. Thanks to Hasan's answer.

from pynput.mouse import Listener

def is_clicked(x, y, button, pressed):
    if pressed:
        print('Clicked ! ') #in your case, you can move it to some other pos
        return False # to stop the thread after click

with Listener(on_click=is_clicked) as listener:
    listener.join()

来源：https://stackoverflow.com/questions/41688871/python-check-if-mouse-clicked