
下面这是预览

已经加了几行代码,仍不解决
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QGuiApplication
if __name__ == "__main__":
QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
QGuiApplication.setAttribute(Qt.AA_EnableHighDpiScaling)
QGuiApplication.setAttribute(Qt.AA_UseHighDpiPixmaps)
QGuiApplication.setHighDpiScaleFactorRoundingPolicy(Qt.HighDpiScaleFactorRoundingPolicy.PassThrough)