高分辨率屏幕上的PyQt GUI大小 [英] PyQt GUI size on high resolution screens

问题描述

我不久前发布了问题询问有关Tkinter后端的信息，但后来却忘记了，但后来我意识到我正在使用pyqt后端.有解决办法吗?

I posted a question a while ago asking about Tkinter backends and subsequently forgot about it but I've since realised that I'm using the pyqt backend. Is there a fix for that?

原始问题:

因此，看来matplotlib gui图(la plt.show())不适应监视器分辨率，并且在高分辨率屏幕上显得很小.是否有matplotlib + Pyqt修复程序，或者我在Windows设置中的某个地方摆弄了东西?

So it appears that matplotlib gui plots (a la plt.show()) don't adapt to monitor resolution and appear tiny on high resolution screens. Is there a matplotlib+Pyqt fix or do I have fiddle around somewhere in Windows settings?

谢谢

推荐答案

在加载应用之前，而不是加载时.

Before app is loaded, and not while loading.

插入:

if hasattr(QtCore.Qt, 'AA_EnableHighDpiScaling'):
    PyQt5.QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)

if hasattr(QtCore.Qt, 'AA_UseHighDpiPixmaps'):
    PyQt5.QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True)

像这样:

import PyQt5
from PyQt5 import QtCore, QtGui, uic, QtWidgets
from PyQt5.QtWidgets import QWidget

if hasattr(QtCore.Qt, 'AA_EnableHighDpiScaling'):
    PyQt5.QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)

if hasattr(QtCore.Qt, 'AA_UseHighDpiPixmaps'):
    PyQt5.QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True)


class MyWindow(PyQt5.QtWidgets.QMainWindow):
    def __init__(self):
        super(MyWindow, self).__init__()

如果仍然无法使用，请使用用户en var，而不是system en var.

And if that still don't work, in user en var and not system en var.

QT_AUTO_SCREEN_SCALE_FACTOR=2 

qt-5/highdpi

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