tkinter winfo_screenwidth() 与双显示器一起使用时 [英] tkinter winfo_screenwidth() when used with dual monitors

问题描述

使用 tkinter 画布，为了计算我显示的图形的大小，我通常使用函数 winfo_screenwidth()，并相应地调整我的对象的大小.但是当在有两个显示器的系统上使用时，winfo_screenwidth() 返回两个显示器的组合宽度——这会弄乱我的图形.如何分别找出每台显示器的屏幕宽度(以像素为单位)?

With tkinter canvas, to calculate the size of the graphics I display, I normally use the function winfo_screenwidth(), and size my objects accordingly. But when used on a system with two monitors, winfo_screenwidth() returns the combined width of both monitors -- which messes up my graphics. How can I find out the screen width in pixels of each monitor, separately?

我在各种 Linux 机器(Ubuntu 和 Mint)上使用多个版本的 Python 3.x 和多个版本的 tkinter(均为 8.5 或更高版本)时遇到了这个问题.

I have had this problem with several versions of Python 3.x and several versions of tkinter (all 8.5 or above) on a variety of Linux machines (Ubuntu and Mint).

例如，第一台显示器的宽度为 1440 像素.第二个是 1980 像素宽.wininfo_screenwidth() 返回 3360.

For example, the first monitor is 1440 pixels wide. The second is 1980 pixels wide. winfo_screenwidth() returns 3360.

我需要找到一种方法来独立确定每个显示器的屏幕宽度.

I need to find a way to determine the screenwidth for each monitor independently.

谢谢！

推荐答案

这是一个老问题，但仍然:对于跨平台解决方案，您可以尝试 screeninfo 模块，并通过以下方式获取有关每个监视器的信息:

It is an old question, but still: for a cross-platform solution, you could try the screeninfo module, and get information about every monitor with:

import screeninfo
screeninfo.get_monitors()

如果您需要知道您的一个窗口位于哪个显示器上，您可以使用:

If you need to know on which monitor one of your windows is located, you could use:

def get_monitor_from_coord(x, y):
    monitors = screeninfo.get_monitors()

    for m in reversed(monitors):
        if m.x <= x <= m.width + m.x and m.y <= y <= m.height + m.y:
            return m
    return monitors[0]

# Get the screen which contains top
current_screen = get_monitor_from_coord(top.winfo_x(), top.winfo_y())

# Get the monitor's size
print current_screen.width, current_screen.height

(其中 top 是您的 Tk 根)

(where top is your Tk root)

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