如何在pyqt5中获得无框架窗口

Question

我是PyQt5的新手，很难弄清楚如何相应地转换代码，使其无帧。我已经使用了标志，但它一直给我一个错误；UI_MainWindow对象没有属性"SetWindowFlags"。问题出在执行部分，但我不知道如何进行修改。

# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'MainScreen.UI'
#
# Created by: PyQt5 UI code generator 5.15.2
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QVBoxLayout, QSizeGrip
import sys

class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(688, 525)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setSpacing(0)
self.verticalLayout.setObjectName("verticalLayout")
self.Header = QtWidgets.QFrame(self.centralwidget)
self.Header.setMaximumSize(QtCore.QSize(16777215, 50))
self.Header.setStyleSheet("background-color: rgb(239, 128, 0);")
self.Header.setFrameShape(QtWidgets.QFrame.WinPanel)
self.Header.setFrameShadow(QtWidgets.QFrame.Raised)
self.Header.setObjectName("Header")
self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.Header)
self.horizontalLayout_2.setContentsMargins(0, 0, 0, 0)
self.horizontalLayout_2.setSpacing(0)
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.Title_bar_container = QtWidgets.QFrame(self.Header)
self.Title_bar_container.setStyleSheet("background-color: rgb(239, 133, 0);")
self.Title_bar_container.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.Title_bar_container.setFrameShadow(QtWidgets.QFrame.Raised)
self.Title_bar_container.setObjectName("Title_bar_container")
self.Slider = QtWidgets.QFrame(self.Title_bar_container)
self.Slider.setGeometry(QtCore.QRect(0, 0, 71, 52))
self.Slider.setStyleSheet("background-color: rgb(239, 133, 0);")
self.Slider.setFrameShape(QtWidgets.QFrame.NoFrame)
self.Slider.setFrameShadow(QtWidgets.QFrame.Raised)
self.Slider.setObjectName("Slider")
self.horizontalLayout_4 = QtWidgets.QHBoxLayout(self.Slider)
self.horizontalLayout_4.setContentsMargins(0, 0, 0, 0)
self.horizontalLayout_4.setSpacing(0)
self.horizontalLayout_4.setObjectName("horizontalLayout_4")
self.pushButton_4 = QtWidgets.QPushButton(self.Slider)
self.pushButton_4.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.pushButton_4.setStyleSheet("n"
"QPushButton{n"
"background-color: rgb(239, 133, 0);n"
"border:none;n"
"}n"
"n"
"QPushButton::hover{n"
"    n"
"    background-color: rgb(243, 164, 50);n"
"}")
self.pushButton_4.setText("")
icon = QtGui.QIcon()
icon.addPixmap(QtGui.QPixmap(":/icon_pics/png/004-list.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
self.pushButton_4.setIcon(icon)
self.pushButton_4.setIconSize(QtCore.QSize(24, 24))
self.pushButton_4.setObjectName("pushButton_4")
self.horizontalLayout_4.addWidget(self.pushButton_4)
self.horizontalLayout_2.addWidget(self.Title_bar_container)
self.Top_right_buttons = QtWidgets.QFrame(self.Header)
self.Top_right_buttons.setMaximumSize(QtCore.QSize(100, 16777215))
self.Top_right_buttons.setStyleSheet("background-color: rgb(239, 133, 0);")
self.Top_right_buttons.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.Top_right_buttons.setFrameShadow(QtWidgets.QFrame.Raised)
self.Top_right_buttons.setObjectName("Top_right_buttons")
self.horizontalLayout_3 = QtWidgets.QHBoxLayout(self.Top_right_buttons)
self.horizontalLayout_3.setContentsMargins(0, 0, 0, 0)
self.horizontalLayout_3.setSpacing(0)
self.horizontalLayout_3.setObjectName("horizontalLayout_3")
self.pushButton = QtWidgets.QPushButton(self.Top_right_buttons)
self.pushButton.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.pushButton.setMouseTracking(False)
self.pushButton.setWhatsThis("")
self.pushButton.setStyleSheet("n"
"QPushButton{n"
"background-color: rgb(239, 133, 0);n"
"border:none;n"
"}n"
"n"
"QPushButton::hover{n"
"    n"
"    background-color: rgb(243, 164, 50);n"
"}")
self.pushButton.setText("")
icon1 = QtGui.QIcon()
icon1.addPixmap(QtGui.QPixmap(":/icon_pics/png/001-minimize.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
self.pushButton.setIcon(icon1)
self.pushButton.setIconSize(QtCore.QSize(24, 24))
self.pushButton.setFlat(False)
self.pushButton.setObjectName("pushButton")
self.horizontalLayout_3.addWidget(self.pushButton)
self.pushButton_2 = QtWidgets.QPushButton(self.Top_right_buttons)
self.pushButton_2.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.pushButton_2.setStyleSheet("background-color: rgb(239, 133, 0);n"
"border:none;n"
"n"
"QPushButton::hover{n"
"    n"
"    background-color: rgb(243, 164, 50);n"
"}")
self.pushButton_2.setText("")
icon2 = QtGui.QIcon()
icon2.addPixmap(QtGui.QPixmap(":/icon_pics/png/003-expand.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
self.pushButton_2.setIcon(icon2)
self.pushButton_2.setIconSize(QtCore.QSize(24, 24))
self.pushButton_2.setObjectName("pushButton_2")
self.horizontalLayout_3.addWidget(self.pushButton_2)
self.pushButton_3 = QtWidgets.QPushButton(self.Top_right_buttons)
self.pushButton_3.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.pushButton_3.setStyleSheet("n"
"QPushButton{n"
"background-color: rgb(239, 133, 0);n"
"border:none;n"
"}n"
"n"
"QPushButton::hover{n"
"    n"
"    background-color: rgb(243, 164, 50);n"
"}")
self.pushButton_3.setText("")
icon3 = QtGui.QIcon()
icon3.addPixmap(QtGui.QPixmap(":/icon_pics/png/002-remove.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
self.pushButton_3.setIcon(icon3)
self.pushButton_3.setIconSize(QtCore.QSize(24, 24))
self.pushButton_3.setObjectName("pushButton_3")
self.horizontalLayout_3.addWidget(self.pushButton_3)
self.horizontalLayout_2.addWidget(self.Top_right_buttons)
self.verticalLayout.addWidget(self.Header)
self.Main_body = QtWidgets.QFrame(self.centralwidget)
self.Main_body.setStyleSheet("background-color: rgb(0, 0, 127);")
self.Main_body.setFrameShape(QtWidgets.QFrame.NoFrame)
self.Main_body.setFrameShadow(QtWidgets.QFrame.Raised)
self.Main_body.setObjectName("Main_body")
self.horizontalLayout = QtWidgets.QHBoxLayout(self.Main_body)
self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
self.horizontalLayout.setSpacing(0)
self.horizontalLayout.setObjectName("horizontalLayout")
self.Left_side_menu = QtWidgets.QFrame(self.Main_body)
self.Left_side_menu.setMaximumSize(QtCore.QSize(70, 16777215))
self.Left_side_menu.setStyleSheet("background-color: rgb(239, 128, 0);n"
"background-color: rgb(243, 164, 50);")
self.Left_side_menu.setFrameShape(QtWidgets.QFrame.NoFrame)
self.Left_side_menu.setFrameShadow(QtWidgets.QFrame.Raised)
self.Left_side_menu.setObjectName("Left_side_menu")
self.horizontalLayout.addWidget(self.Left_side_menu)
self.Main_screen = QtWidgets.QFrame(self.Main_body)
self.Main_screen.setStyleSheet("background-color: rgb(239, 128, 0);n"
"background-color: rgb(243, 164, 50);")
self.Main_screen.setFrameShape(QtWidgets.QFrame.NoFrame)
self.Main_screen.setFrameShadow(QtWidgets.QFrame.Raised)
self.Main_screen.setObjectName("Main_screen")
self.horizontalLayout.addWidget(self.Main_screen)
self.Right_side_menu = QtWidgets.QFrame(self.Main_body)
self.Right_side_menu.setMaximumSize(QtCore.QSize(70, 16777215))
self.Right_side_menu.setStyleSheet("background-color: rgb(239, 128, 0);n"
"background-color: rgb(243, 164, 50);")
self.Right_side_menu.setFrameShape(QtWidgets.QFrame.NoFrame)
self.Right_side_menu.setFrameShadow(QtWidgets.QFrame.Raised)
self.Right_side_menu.setObjectName("Right_side_menu")
self.horizontalLayout.addWidget(self.Right_side_menu)
self.verticalLayout.addWidget(self.Main_body)
self.Footer = QtWidgets.QFrame(self.centralwidget)
self.Footer.setMaximumSize(QtCore.QSize(16777215, 50))
self.Footer.setStyleSheet("background-color: rgb(239, 128, 0);n"
"background-color: rgb(243, 164, 50);")
self.Footer.setFrameShape(QtWidgets.QFrame.NoFrame)
self.Footer.setFrameShadow(QtWidgets.QFrame.Raised)
self.Footer.setObjectName("Footer")
self.verticalLayout.addWidget(self.Footer)
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
flags = QtCore.Qt.WindowFlags(QtCore.Qt.FramelessWindowHint | QtCore.Qt.WindowStaysOnTopHint)
self.setWindowFlags(flags)

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

if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())

Answer 1

问题来自于您试图编辑一个不打算修改的文件(正如标题中的警告所说(。

CCD_ 1是QWidget类的函数。这里使用的self指的是Ui_MainWindow实例，它是一个简单的python对象("Form类"(。

理论上，您可以将该函数用于setupUi的MainWindow参数(是的QWidget子类，因此它实现了该函数(：

MainWindow.setWindowFlags(flags)

但是，不
编辑这些文件被认为是一种糟糕的做法，在不知道自己在做什么(也不知道为什么(的情况下尝试编辑这些文件总是会导致误解、意外行为和错误，就像在你的情况下一样，没有考虑到无论何时你需要更改ui中的某些内容，你都必须痛苦地将新的ui文件与现有代码合并。

使用pyuic重新生成该文件，保持原样。然后创建一个新的脚本，这将是您的实际程序脚本，并对这些文件执行唯一的操作：导入它。

from PyQt5 import QtWidgets
from file_generated_by_pyuic import Ui_MainWindow
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super().__init__()
self.setupUi(self)
self.setWindowFlags(
self.windowFlags() | 
QtCore.Qt.FramelessWindowHint | 
QtCore.Qt.WindowStaysOnTopHint
)

if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
# note the lower case "mainWindow", indicating it's an *instance*
mainWindow = MainWindow()
mainWindow.show()
sys.exit(app.exec_())

在上面的示例中，暗示您使用pyuic创建了一个名为file_generated_by_pyuic.py的文件。

在有关使用Designer的官方指南中阅读有关此主题的更多信息。