不要在 widget.setStyleSheet 中插入背景图片

Question

运行文件代码：

from PyQt5 import QtCore, QtGui, QtWidgets
import subprocess, re, shlex, json, test_fon_cod, os, sys, random, threading, time, glob, math, help, http.client, urllib.request, urllib.parse, urllib.error


class Ui_Frame(QtWidgets.QMainWindow, test_fon_cod.Ui_test_fon):
    def __init__(self, parent=None):
        QtWidgets.QWidget.__init__(self, parent)
        self.setupUi(self)


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    window = Ui_Frame()
    window.show()
    sys.exit(app.exec_())

运行通过pyuic5.bat从“ui”文件转换得到的文件：

    from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_test_fon(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(541, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.widget = QtWidgets.QWidget(self.centralwidget)
        self.widget.setGeometry(QtCore.QRect(18, 21, 190, 154))
        self.widget.setStyleSheet("border-image: url(E:\image\fon.png);")
        self.widget.setObjectName("widget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 541, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

他试图以不同的方式加载图片，而不是它如何不工作。 一开始，没什么好骂的，也加载不出来

Answer 1

更改模块test_fon_cod.py的行

self.widget.setStyleSheet("border-image: url(E:\image\fon.png);")

开

self.widget.setStyleSheet("border-image: url(E:/image/fon.png);")

见：Python 3 Quick Tip: The easy way to deal with file paths on Windows, Mac and Linux

您的文件系统从根目录开始，在 Unix 上用正斜杠 / 表示，在 Windows 上用驱动器号 C:/ 表示。

>>> from pathlib import Path
>>> pathFile = Path("pythonw.exe").resolve()
>>> 
>>> pathFile
WindowsPath('E:/Python/pythonw.exe')
>>> 

main.py

from PyQt5 import QtCore, QtGui, QtWidgets
import test_fon_cod

class Ui_Frame(QtWidgets.QMainWindow, test_fon_cod.Ui_test_fon):
    def __init__(self, parent=None):
        QtWidgets.QMainWindow.__init__(self, parent)
        self.setupUi(self)

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    window = Ui_Frame()
    window.show()
    sys.exit(app.exec_())

test_fon_cod.py

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_test_fon(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(541, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.widget = QtWidgets.QWidget(self.centralwidget)
        self.widget.setGeometry(QtCore.QRect(18, 21, 190, 154))

        self.widget.setStyleSheet("border-image: url(E:/_Qt/img/qt-logo.png);")  # <----
        self.widget.setObjectName("widget")
        MainWindow.setCentralWidget(self.centralwidget)

        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 541, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))