wmutil

Utility functions for getting monitor (display) information on Windows.

Installation

Requires Python 3.8+ and Windows

pip install wmutil

Usage

import wmutil


# Enumerate all monitors
print('Enumerating monitors:')
for monitor in wmutil.enumerate_monitors():
    # Print monitor attributes
    print(monitor, monitor.name, monitor.size, monitor.position, monitor.refresh_rate_millihertz, monitor.handle, sep='\n\t')


# Get primary monitor
primary_monitor = wmutil.get_primary_monitor()

# Get a monitor based on point coordinates
monitor = wmutil.get_monitor_from_point(0, 0)

# compare monitor objects
if monitor == primary_monitor:
   print('it is the primary monitor')


# Get monitor from an HWND
from ahk import AHK  # pip install ahk[binary]
ahk = AHK()

window = ahk.active_window
hwnd = int(window.id, 0)
monitor_for_active_window = wmutil.get_window_monitor(hwnd)
print(window.title, 'is using monitor', monitor_for_active_window.name)

Example output:

Enumerating monitors:
<wmutil.Monitor object; handle=491197379>
        \\.\DISPLAY1
        (1920, 1080)
        (-3840, -418)
        60000
        491197379
<wmutil.Monitor object; handle=85595795>
        \\.\DISPLAY2
        (3440, 1440)
        (0, 0)
        60000
        85595795
it is the primary monitor

Untitled - Notepad is using monitor \\.\DISPLAY2

Changing the primary monitor:

You can use the set_primary_monitor function, which accepts a display name or you can use the set_primary method of a Monitor object to change the primary monitor. If the monitor is already the primary monitor, no change will be made and the operation is considered successful. Returns True when successful and False when not successful. If an invalid monitor name is given, an exception is raised.

import wmutil
monitor: wmutil.Monitor  # assume this is already defined

wmutil.set_primary_monitor(monitor.name)
# or
monitor.set_primary()

Notes:

• monitor.size may not necessarily reflect the monitor's resolution, but rather is the geometry used for drawing or moving windows