Use LocateOnScreen with Multiple Monitors

I have an extra monitor plugged into my laptop many times (but not all the time) and I recently noticed that the following code:

    import pyautogui
    change_intense_to_calm = pyautogui.locateOnScreen('Intense.png', confidence = 0.9)
    run_script_button_x, run_script_button_y = pyautogui.center(change_intense_to_calm)
    pyautogui.click(run_script_button_x, run_script_button_y)

doesn’t work when the 'Intense.png" item appears on the second monitor! It does move the mouse to the position and click if it appears on the primary monitor (the laptop screen), but if the window containing that item is on the secondary monitor, it fails, giving me this error:

    Traceback (most recent call last):
      File "E:\test_folder\switch.py", line 18, in <module>
        run_script_button_x, run_script_button_y = pyautogui.center(change_intense_to_calm)
      File "C:\Program Files\Python\Python37\lib\site-packages\pyscreeze\__init__.py", line 407, in center
        return (coords[0] + int(coords[2] / 2), coords[1] + int(coords[3] / 2))
    TypeError: 'NoneType' object is not subscriptable

presumably because it’s not finding it.

How can I modify my code so that it will find the item and click it regardless of which monitor the window containing it is located on?

[Maracaipe611]

Add these 3 lines to the top of your code to enable all monitor screengrabs in Windows:

from PIL import ImageGrab
from functools import partial
ImageGrab.grab = partial(ImageGrab.grab, all_screens=True)

[pascallo]

If still relevant for someone on windows:

In my opinion the issue is, that the current version of pyscreeze utilizing ImageGrab (Pillow) on windows only uses single-screen grab.

A dirty quick fix in pyscreeze could be:

• enable all_screen grabbing: In file: pyscreeze/__init__.py, function: def _screenshot_win32(imageFilename=None, region=None): change im = ImageGrab.grab() to im = ImageGrab.grab(all_screens= True)

• handle new introduced negative coordinates due to multiple monitor: In file: pyscreeze/__init__.py, function: def locateOnScreen(image, minSearchTime=0, **kwargs): behind retVal = locate(image, screenshotIm, **kwargs) add

if retVal and sys.platform == 'win32':
    # get the lowest x and y coordinate of the monitor setup
    monitors = win32api.EnumDisplayMonitors()
    x_min = min([mon[2][0] for mon in monitors])
    y_min = min([mon[2][1] for mon in monitors])
    # add negative offset due to multi monitor
    retVal = Box(left=retVal[0] + x_min, top=retVal[1] + y_min, width=retVal[2], height=retVal[3])

• don’t forget to add the import win32api In file: pyscreeze/__init__.py,:

if sys.platform == 'win32': # TODO - Pillow now supports ImageGrab on macOS.
    import win32api # used for multi-monitor fix
    from PIL import ImageGrab