Python中获取屏幕DPI值的不同方法总结

import tkinter as tk

def get_screen_dpi():
    root = tk.Tk()
    dpi_x = root.winfo_fpixels('1i')  # 获取水平方向的 DPI
    dpi_y = root.winfo_fpixels('1i')  # 获取垂直方向的 DPI
    root.destroy()
    return dpi_x, dpi_y

dpi_x, dpi_y = get_screen_dpi()
print(f"Horizontal DPI: {dpi_x}")
print(f"Vertical DPI: {dpi_y}")

pip install screeninfo

from screeninfo import get_monitors

def get_screen_dpi():
    monitor = get_monitors()[0]  # 获取第一个显示器的信息
    width_mm = monitor.width_mm
    height_mm = monitor.height_mm
    width_px = monitor.width
    height_px = monitor.height

    # 计算水平和垂直方向的 DPI
    dpi_x = (width_px / width_mm) * 25.4
    dpi_y = (height_px / height_mm) * 25.4
    return dpi_x, dpi_y

dpi_x, dpi_y = get_screen_dpi()
print(f"Horizontal DPI: {dpi_x}")
print(f"Vertical DPI: {dpi_y}")

pip install pywin32

import win32api
import win32print

def get_screen_dpi():
    hdc = win32print.GetDC(0)
    dpi_x = win32print.GetDeviceCaps(hdc, win32print.LOGPIXELSX)
    dpi_y = win32print.GetDeviceCaps(hdc, win32print.LOGPIXELSY)
    win32print.ReleaseDC(hdc)
    return dpi_x, dpi_y

dpi_x, dpi_y = get_screen_dpi()
print(f"Horizontal DPI: {dpi_x}")
print(f"Vertical DPI: {dpi_y}")

import matplotlib.pyplot as plt

def get_screen_dpi():
    fig = plt.figure()
    dpi = fig.dpi
    plt.close(fig)
    return dpi

dpi = get_screen_dpi()
print(f"Screen DPI: {dpi}")