How to detect if mouse was clicked?

Question

I’m trying to build a short script in Python, where 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 with other applications (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 which library to use. I’d prefer if it was cross-platform, or at least work on Windows and 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.')

Asked By: TheDetective

||

Source

Answer 1

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()

Answered By: TheDetective

Answer 2

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 up = 0 or 1. Button down = -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)

Answered By: Markacho

Answer 3

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()

Answered By: Mahamudul Hasan

Answer 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()

Answered By: Mujeeb Ishaque

Answer 5

import pynput

def on_click(x, y, button, pressed):
    if pressed:
        print("Mouse button {} clicked at ({}, {})".format(button, x, y))

with pynput.mouse.Listener(on_click=on_click) as listener:
    listener.join()

This code uses the pynput.mouse.Listener to create a listener for mouse events. The on_click function is called whenever a mouse button is clicked and receives information about the mouse position (x, y) and the mouse button that was clicked (button). The pressed argument is a boolean that indicates whether the button is pressed (True) or released (False).

In this example, if the mouse button is pressed, the code will print a message indicating the button and position of the mouse click. The join method is called to start the listener, and the with statement is used to ensure that the listener is stopped when the program ends.

This works you only need to add this code to your own code and convert it however you would like =).

Answered By: ProCode

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