如何在Python中获得显示器分辨率？

Question

获取监视器分辨率的最简单方法是什么(最好是在元组中)？

Answer 1

在Windows中,您还可以使用ctypes GetSystemMetrics():

import ctypes
user32 = ctypes.windll.user32
screensize = user32.GetSystemMetrics(0), user32.GetSystemMetrics(1)

这样你就不需要安装pywin32包了; 它不需要Python本身没有的任何东西.

对于多显示器设置,您可以检索虚拟显示器的组合宽度和高度:

import ctypes
user32 = ctypes.windll.user32
screensize = user32.GetSystemMetrics(78), user32.GetSystemMetrics(79)

Answer 2

我出于这个原因创建了一个PyPI模块:

pip install screeninfo

代码:

from screeninfo import get_monitors
for m in get_monitors():
    print(str(m))

结果:

monitor(1920x1080+1920+0)
monitor(1920x1080+0+0)

它支持多监视器环境.它的目标是跨平台; 目前它支持Cygwin和X11,但拉取请求是完全受欢迎的.

Answer 3

在Windows上:

from win32api import GetSystemMetrics

print("Width =", GetSystemMetrics(0))
print("Height =", GetSystemMetrics(1))

如果您正在使用高分辨率屏幕,请确保您的python解释器是HIGHDPIAWARE.

基于这篇文章.

Answer 4

如果你正在使用wxWindows,你可以简单地做:

import wx

app = wx.App(False) # the wx.App object must be created first.    
print(wx.GetDisplaySize())  # returns a tuple

Answer 5

直接来自这篇文章的答案:如何获得Tkinter的屏幕尺寸？

import tkinter as tk

root = tk.Tk()

screen_width = root.winfo_screenwidth()
screen_height = root.winfo_screenheight()

Answer 6

在Windows 8.1上,我无法从ctypes或tk获得正确的解析.其他人对ctypes也有同样的问题:getsystemmetrics返回错误的屏幕大小 要在Windows 8.1上获得高DPI监视器的正确完整分辨率,必须调用SetProcessDPIAware并使用以下代码:

import ctypes
user32 = ctypes.windll.user32
user32.SetProcessDPIAware()
[w, h] = [user32.GetSystemMetrics(0), user32.GetSystemMetrics(1)]

详细信息如下:

我发现这是因为Windows正在报告缩放分辨率.看来python默认是'system dpi aware'应用程序.此处列出了DPI感知应用程序的类型:http: //msdn.microsoft.com/en-us/library/windows/desktop/dn469266%28v=vs.85%29.aspx#dpi_and_the_desktop_scaling_factor

基本上,不是显示内容的完整显示器分辨率,这将使字体变得微小,而是将内容放大,直到字体足够大.

在我的显示器上我得到:
物理分辨率:2560 x 1440(220 DPI)
报告的python分辨率:1555 x 875(158 DPI)

根据这个Windows站点:http://msdn.microsoft.com/en-us/library/aa770067%28v=vs.85%29.aspx 报告的系统有效分辨率的公式是:(reported_px*current_dpi)/(96 dpi )= physical_px

我可以使用以下代码获得正确的全屏分辨率和当前DPI.请注意,我调用SetProcessDPIAware()以允许程序查看真实分辨率.

import tkinter as tk
root = tk.Tk()

width_px = root.winfo_screenwidth()
height_px = root.winfo_screenheight() 
width_mm = root.winfo_screenmmwidth()
height_mm = root.winfo_screenmmheight() 
# 2.54 cm = in
width_in = width_mm / 25.4
height_in = height_mm / 25.4
width_dpi = width_px/width_in
height_dpi = height_px/height_in 

print('Width: %i px, Height: %i px' % (width_px, height_px))
print('Width: %i mm, Height: %i mm' % (width_mm, height_mm))
print('Width: %f in, Height: %f in' % (width_in, height_in))
print('Width: %f dpi, Height: %f dpi' % (width_dpi, height_dpi))

import ctypes
user32 = ctypes.windll.user32
user32.SetProcessDPIAware()
[w, h] = [user32.GetSystemMetrics(0), user32.GetSystemMetrics(1)]
print('Size is %f %f' % (w, h))

curr_dpi = w*96/width_px
print('Current DPI is %f' % (curr_dpi))    

返回的是:

Width: 1555 px, Height: 875 px
Width: 411 mm, Height: 232 mm
Width: 16.181102 in, Height: 9.133858 in
Width: 96.099757 dpi, Height: 95.797414 dpi
Size is 2560.000000 1440.000000
Current DPI is 158.045016

我正在运行带有220 DPI显示器的Windows 8.1.我的显示缩放将当前的DPI设置为158.

我将使用158来确保我的matplotlib图是正确的大小:来自pylab import rcParams rcParams ['figure.dpi'] = curr_dpi

Answer 7

为了完整起见,Mac OS X.

import AppKit
[(screen.frame().size.width, screen.frame().size.height)
    for screen in AppKit.NSScreen.screens()]

将为您提供包含所有屏幕大小的元组列表(如果存在多个监视器)

Answer 8

如果您Qt专门使用该工具包PySide,则可以执行以下操作:

from PySide import QtGui
import sys

app = QtGui.QApplication(sys.argv)
screen_rect = app.desktop().screenGeometry()
width, height = screen_rect.width(), screen_rect.height()

Answer 9

一种跨平台且简单的方法是使用几乎所有 python 版本附带的 TKinter，因此您无需安装任何东西：

import tkinter
root = tkinter.Tk()
root.withdraw()
WIDTH, HEIGHT = root.winfo_screenwidth(), root.winfo_screenheight()

Answer 10

使用Linux,最简单的方法是执行bash命令

xrandr | grep '*'

并使用regexp解析其输出.

你也可以通过PyGame来实现:http://www.daniweb.com/forums/thread54881.html

Answer 11

这是一个快速的小Python程序,它将显示有关多显示器设置的信息:

import gtk

window = gtk.Window()

# the screen contains all monitors
screen = window.get_screen()
print "screen size: %d x %d" % (gtk.gdk.screen_width(),gtk.gdk.screen_height())

# collect data about each monitor
monitors = []
nmons = screen.get_n_monitors()
print "there are %d monitors" % nmons
for m in range(nmons):
  mg = screen.get_monitor_geometry(m)
  print "monitor %d: %d x %d" % (m,mg.width,mg.height)
  monitors.append(mg)

# current monitor
curmon = screen.get_monitor_at_window(screen.get_active_window())
x, y, width, height = monitors[curmon]
print "monitor %d: %d x %d (current)" % (curmon,width,height)  

以下是其输出的示例:

screen size: 5120 x 1200
there are 3 monitors
monitor 0: 1600 x 1200
monitor 1: 1920 x 1200
monitor 2: 1600 x 1200
monitor 1: 1920 x 1200 (current)

Answer 12

扩展@user2366975的答案，使用 Tkinter（Python 2/3 中的代码）在多屏设置中获取当前屏幕尺寸：

try:
    # for Python 3
    import tkinter as tk
except ImportError:
    # for Python 2
    import Tkinter as tk


def get_curr_screen_geometry():
    """
    Workaround to get the size of the current screen in a multi-screen setup.

    Returns:
        geometry (str): The standard Tk geometry string.
            [width]x[height]+[left]+[top]
    """
    root = tk.Tk()
    root.update_idletasks()
    root.attributes('-fullscreen', True)
    root.state('iconic')
    geometry = root.winfo_geometry()
    root.destroy()
    return geometry

（应该跨平台工作，仅在 Linux 上测试）

Answer 13

我在我的一个项目中使用get_screen_resolution方法,如下面的一个,它基本上是一个导入链.您可以根据需要修改此项,方法是删除不需要的部分,并在链中向上移动更多可能的端口.

PYTHON_V3 = sys.version_info >= (3,0,0) and sys.version_info < (4,0,0):
#[...]
    def get_screen_resolution(self, measurement="px"):
        """
        Tries to detect the screen resolution from the system.
        @param measurement: The measurement to describe the screen resolution in. Can be either 'px', 'inch' or 'mm'. 
        @return: (screen_width,screen_height) where screen_width and screen_height are int types according to measurement.
        """
        mm_per_inch = 25.4
        px_per_inch =  72.0 #most common
        try: # Platforms supported by GTK3, Fx Linux/BSD
            from gi.repository import Gdk 
            screen = Gdk.Screen.get_default()
            if measurement=="px":
                width = screen.get_width()
                height = screen.get_height()
            elif measurement=="inch":
                width = screen.get_width_mm()/mm_per_inch
                height = screen.get_height_mm()/mm_per_inch
            elif measurement=="mm":
                width = screen.get_width_mm()
                height = screen.get_height_mm()
            else:
                raise NotImplementedError("Handling %s is not implemented." % measurement)
            return (width,height)
        except:
            try: #Probably the most OS independent way
                if PYTHON_V3: 
                    import tkinter 
                else:
                    import Tkinter as tkinter
                root = tkinter.Tk()
                if measurement=="px":
                    width = root.winfo_screenwidth()
                    height = root.winfo_screenheight()
                elif measurement=="inch":
                    width = root.winfo_screenmmwidth()/mm_per_inch
                    height = root.winfo_screenmmheight()/mm_per_inch
                elif measurement=="mm":
                    width = root.winfo_screenmmwidth()
                    height = root.winfo_screenmmheight()
                else:
                    raise NotImplementedError("Handling %s is not implemented." % measurement)
                return (width,height)
            except:
                try: #Windows only
                    from win32api import GetSystemMetrics 
                    width_px = GetSystemMetrics (0)
                    height_px = GetSystemMetrics (1)
                    if measurement=="px":
                        return (width_px,height_px)
                    elif measurement=="inch":
                        return (width_px/px_per_inch,height_px/px_per_inch)
                    elif measurement=="mm":
                        return (width_px/mm_per_inch,height_px/mm_per_inch)
                    else:
                        raise NotImplementedError("Handling %s is not implemented." % measurement)
                except:
                    try: # Windows only
                        import ctypes
                        user32 = ctypes.windll.user32
                        width_px = user32.GetSystemMetrics(0)
                        height_px = user32.GetSystemMetrics(1)
                        if measurement=="px":
                            return (width_px,height_px)
                        elif measurement=="inch":
                            return (width_px/px_per_inch,height_px/px_per_inch)
                        elif measurement=="mm":
                            return (width_px/mm_per_inch,height_px/mm_per_inch)
                        else:
                            raise NotImplementedError("Handling %s is not implemented." % measurement)
                    except:
                        try: # Mac OS X only
                            import AppKit 
                            for screen in AppKit.NSScreen.screens():
                                width_px = screen.frame().size.width
                                height_px = screen.frame().size.height
                                if measurement=="px":
                                    return (width_px,height_px)
                                elif measurement=="inch":
                                    return (width_px/px_per_inch,height_px/px_per_inch)
                                elif measurement=="mm":
                                    return (width_px/mm_per_inch,height_px/mm_per_inch)
                                else:
                                    raise NotImplementedError("Handling %s is not implemented." % measurement)
                        except: 
                            try: # Linux/Unix
                                import Xlib.display
                                resolution = Xlib.display.Display().screen().root.get_geometry()
                                width_px = resolution.width
                                height_px = resolution.height
                                if measurement=="px":
                                    return (width_px,height_px)
                                elif measurement=="inch":
                                    return (width_px/px_per_inch,height_px/px_per_inch)
                                elif measurement=="mm":
                                    return (width_px/mm_per_inch,height_px/mm_per_inch)
                                else:
                                    raise NotImplementedError("Handling %s is not implemented." % measurement)
                            except:
                                try: # Linux/Unix
                                    if not self.is_in_path("xrandr"):
                                        raise ImportError("Cannot read the output of xrandr, if any.")
                                    else:
                                        args = ["xrandr", "-q", "-d", ":0"]
                                        proc = subprocess.Popen(args,stdout=subprocess.PIPE)
                                        for line in iter(proc.stdout.readline,''):
                                            if isinstance(line, bytes):
                                                line = line.decode("utf-8")
                                            if "Screen" in line:
                                                width_px = int(line.split()[7])
                                                height_px = int(line.split()[9][:-1])
                                                if measurement=="px":
                                                    return (width_px,height_px)
                                                elif measurement=="inch":
                                                    return (width_px/px_per_inch,height_px/px_per_inch)
                                                elif measurement=="mm":
                                                    return (width_px/mm_per_inch,height_px/mm_per_inch)
                                                else:
                                                    raise NotImplementedError("Handling %s is not implemented." % measurement)
                                except:
                                    # Failover
                                    screensize = 1366, 768
                                    sys.stderr.write("WARNING: Failed to detect screen size. Falling back to %sx%s" % screensize)
                                    if measurement=="px":
                                        return screensize
                                    elif measurement=="inch":
                                        return (screensize[0]/px_per_inch,screensize[1]/px_per_inch)
                                    elif measurement=="mm":
                                        return (screensize[0]/mm_per_inch,screensize[1]/mm_per_inch)
                                    else:
                                        raise NotImplementedError("Handling %s is not implemented." % measurement)

Answer 14

老问题,但这是缺少的.我是python的新手所以请告诉我这是否是一个"坏"的解决方案.这个解决方案仅支持windows和mac,它只适用于主屏幕 - 但问题中没有提到操作系统.

通过截图来衡量大小.由于屏幕尺寸不应该改变,因此必须只进行一次.如果你有一个像gtk,wx,...安装的gui工具包,那么有更优雅的解决方案.

看枕头

pip install Pillow

from PIL import ImageGrab

img = ImageGrab.grab()
print (img.size)

Answer 15

XWindows版本:

#!/usr/bin/python

import Xlib
import Xlib.display

resolution = Xlib.display.Display().screen().root.get_geometry()
print str(resolution.width) + "x" + str(resolution.height)

Answer 16

如果您安装了PyQt4,请尝试以下代码:

from PyQt4 import QtGui
import sys

MyApp = QtGui.QApplication(sys.argv)
V = MyApp.desktop().screenGeometry()
h = V.height()
w = V.width()
print("The screen resolution (width X height) is the following:")
print(str(w) + "X" + str(h))

对于PyQt5,以下内容将起作用:

from PyQt5 import QtWidgets
import sys

MyApp = QtWidgets.QApplication(sys.argv)
V = MyApp.desktop().screenGeometry()
h = V.height()
w = V.width()
print("The screen resolution (width X height) is the following:")
print(str(w) + "X" + str(h))

Answer 17

请尝试以下代码:

import subprocess
resuls = subprocess.Popen(['xrandr'],stdout=subprocess.PIPE).communicate()[0].split("current")[1].split(",")[0]
width = resuls.split("x")[0].strip()
heigth = resuls.split("x")[1].strip()
print width + "x" + heigth

Answer 18

尝试 pyautogui：

import pyautogui
resolution = pyautogui.size()
print(resolution)