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本文介紹了AttributeError:QDialog 對象沒有屬性 setCentralWidget的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學習吧！

問題描述

我正在嘗試使用 QT Designer 創(chuàng)建一個 GUI.我已使用以下教程將我的 .ui 設計器文件轉換為 .py 文件:

例如，您選擇了一個主窗口，因此您必須使用 QMainWindow 來實現(xiàn)它.

<代碼>## 創(chuàng)建者:PyQt5 UI 代碼生成器 5.7## 警告！在此文件中所做的所有更改都將丟失！導入系統(tǒng)從 PyQt5 導入 QtCore、QtGui、QtWidgets從 PyQt5.QtWidgets 導入 QApplication、QMainWindow類 Ui_ImageDialog(對象):def setupUi(self, MainWindow):MainWindow.setObjectName("MainWindow")MainWindow.resize(800, 600)self.centralwidget = QtWidgets.QWidget(MainWindow)self.centralwidget.setObjectName("centralwidget")self.pushButton = QtWidgets.QPushButton(self.centralwidget)self.pushButton.setGeometry(QtCore.QRect(160, 200, 191, 151))self.pushButton.setObjectName("pushButton")self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)self.pushButton_2.setGeometry(QtCore.QRect(450, 200, 191, 151))self.pushButton_2.setObjectName("pushButton_2")self.label = QtWidgets.QLabel(self.centralwidget)self.label.setGeometry(QtCore.QRect(150, 70, 501, 101))調色板 = QtGui.QPalette()畫筆 = QtGui.QBrush(QtGui.QColor(255, 0, 255))Brush.setStyle(QtCore.Qt.SolidPattern)調色板.setBrush(QtGui.QPalette.Active，QtGui.QPalette.WindowText，畫筆)畫筆 = QtGui.QBrush(QtGui.QColor(255, 0, 255))Brush.setStyle(QtCore.Qt.SolidPattern)調色板.setBrush(QtGui.QPalette.Inactive，QtGui.QPalette.WindowText，畫筆)畫筆 = QtGui.QBrush(QtGui.QColor(127, 127, 127))Brush.setStyle(QtCore.Qt.SolidPattern)調色板.setBrush(QtGui.QPalette.Disabled，QtGui.QPalette.WindowText，畫筆)self.label.setPalette(調色板)字體 = QtGui.QFont()字體.setPointSize(72)self.label.setFont(字體)self.label.setLayoutDirection(QtCore.Qt.LeftToRight)self.label.setObjectName("標簽")MainWindow.setCentralWidget(self.centralwidget)self.menubar = QtWidgets.QMenuBar(MainWindow)self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))self.menubar.setObjectName("菜單欄")MainWindow.setMenuBar(self.menubar)self.statusbar = QtWidgets.QStatusBar(MainWindow)self.statusbar.setObjectName("狀態(tài)欄")MainWindow.setStatusBar(self.statusbar)self.retranslateUi(MainWindow)QtCore.QMetaObject.connectSlotsByName(MainWindow)def retranslateUi(self, MainWindow):_translate = QtCore.QCoreApplication.translateMainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))self.pushButton.setText(_translate("MainWindow", "打開輸入文件:"))self.pushButton_2.setText(_translate("MainWindow", "Run"))self.label.setText(_translate("MainWindow", "Happy Scraping"))應用程序 = QApplication(sys.argv)窗口 = QMainWindow()ui = Ui_ImageDialog()ui.setupUi(窗口)窗口.show()sys.exit(app.exec_())

如果你想實現(xiàn)一個 QDialog，你必須選擇一些對話框(底部有按鈕的對話框，右側按鈕的對話框或沒有按鈕的對話框).

I'm trying to create a GUI with QT Designer. I've converted my .ui designer file to a .py file using the following tutorial: http://pyqt.sourceforge.net/Docs/PyQt5/designer.html.

I have the following code:

#
# Created by: PyQt5 UI code generator 5.7
#
# WARNING! All changes made in this file will be lost!
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QDialog

class Ui_ImageDialog(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(160, 200, 191, 151))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(450, 200, 191, 151))
        self.pushButton_2.setObjectName("pushButton_2")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(150, 70, 501, 101))
        palette = QtGui.QPalette()
        brush = QtGui.QBrush(QtGui.QColor(255, 0, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.WindowText, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 0, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.WindowText, brush)
        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.WindowText, brush)
        self.label.setPalette(palette)
        font = QtGui.QFont()
        font.setPointSize(72)
        self.label.setFont(font)
        self.label.setLayoutDirection(QtCore.Qt.LeftToRight)
        self.label.setObjectName("label")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))
        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"))
        self.pushButton.setText(_translate("MainWindow", "Open Input File:"))
        self.pushButton_2.setText(_translate("MainWindow", "Run"))
        self.label.setText(_translate("MainWindow", "Happy Scraping"))

app = QApplication(sys.argv)
window = QDialog()

ui = Ui_ImageDialog()
ui.setupUi(window)

window.show()
sys.exit(app.exec_())

However, when I run this script, I get the following error:

File "/Users/tituskex/scrapeUI.py", line 42, in setupUi
MainWindow.setCentralWidget(self.centralwidget)
AttributeError: 'QDialog' object has no attribute 'setCentralWidget'

Q: Does anyone know how to fix this?

解決方案

When you use qt-designer you can choose the type of widget you want to design:

For example you have chosen a Main Window, therefore you must implement it with QMainWindow.

#
# Created by: PyQt5 UI code generator 5.7
#
# WARNING! All changes made in this file will be lost!
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow

class Ui_ImageDialog(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(160, 200, 191, 151))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(450, 200, 191, 151))
        self.pushButton_2.setObjectName("pushButton_2")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(150, 70, 501, 101))
        palette = QtGui.QPalette()
        brush = QtGui.QBrush(QtGui.QColor(255, 0, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.WindowText, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 0, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.WindowText, brush)
        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.WindowText, brush)
        self.label.setPalette(palette)
        font = QtGui.QFont()
        font.setPointSize(72)
        self.label.setFont(font)
        self.label.setLayoutDirection(QtCore.Qt.LeftToRight)
        self.label.setObjectName("label")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))
        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"))
        self.pushButton.setText(_translate("MainWindow", "Open Input File:"))
        self.pushButton_2.setText(_translate("MainWindow", "Run"))
        self.label.setText(_translate("MainWindow", "Happy Scraping"))

app = QApplication(sys.argv)
window = QMainWindow()

ui = Ui_ImageDialog()
ui.setupUi(window)

window.show()
sys.exit(app.exec_())

If you want to implement a QDialog you must choose some of the Dialog(Dialog with Buttons Bottom, Dialog with Buttons Right or Dialog without Buttons).

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AttributeError:QDialog 對象沒有屬性 setCentralWidget

問題描述

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