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Pyqt5设置返回键和跳转页面键的示例代码

作者:DGX杂学

这篇文章主要介绍了Pyqt5设置返回键和跳转页面键的示例代码,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧

例子一

import sys
from PyQt5.QtWidgets import QMainWindow, QPushButton, QApplication
  
  
class First(QMainWindow):
  
  def __init__(self):
    super().__init__()
  
    self.initUI()
  
  def initUI(self):
    self.btn = QPushButton("进入页面2", self)
    self.btn.move(30, 50)
     
  
  
    self.setGeometry(300, 200, 500, 500)
    self.setWindowTitle('页面1')
 
  
class Second(QMainWindow):
  def __init__(self):
    super().__init__()
  
    self.initUI()
  
  def initUI(self):
    self.btn = QPushButton("进入页面3", self)
    self.btn.move(30, 50)
    self.setGeometry(300, 200, 290, 150)
    self.setWindowTitle('页面2')
 
 
class Third(QMainWindow):
  def __init__(self):
    super().__init__()
  
    self.initUI()
  
  def initUI(self):
    self.btn = QPushButton("返回页面1", self)
    self.btn.move(30, 50)
 
    self.btn2 = QPushButton("功能函数", self)
    self.btn2.move(30, 90)
 
    self.setGeometry(500, 200, 290, 350)
    self.setWindowTitle('页面3')
    self.btn2.clicked.connect(self.action)
  def action(self):
    print("这是功能函数")
   
  
  
if __name__ == '__main__':
  app = QApplication(sys.argv)
  a = First()
  b = Second()
  c = Third()
  a.show()
  a.btn.clicked.connect(b.show)
  a.btn.clicked.connect(a.close)
  b.btn.clicked.connect(c.show)
  b.btn.clicked.connect(b.close)
  c.btn.clicked.connect(a.show)
  c.btn.clicked.connect(c.close)
  sys.exit(app.exec_())

在这里插入图片描述

例子二

from PyQt5 import QtCore, QtGui, QtWidgets
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget, QLabel,\
                     QPushButton, QLineEdit, QMenuBar, QStatusBar
from PyQt5.QtCore import *
 
class FirstWindow(QWidget):
 
  def __init__(self, parent=None):
    # super这个用法是调用父类的构造函数
    # parent=None表示默认没有父Widget,如果指定父亲Widget,则调用之
    super(FirstWindow, self).__init__(parent)
    self.setGeometry(500, 500, 500, 500)
    self.setWindowTitle('显示')
    self.btn = QPushButton(self)
    self.btn.setText('进入页面2')
    self.btn.move(150, 50)
 
 
#下面的一部分是Qtdesigner的代码
 
class Ui_MainWindow(object):
  def setupUi(self, MainWindow):
    MainWindow.setObjectName("MainWindow")
    MainWindow.resize(624, 479)
    self.centralwidget = QtWidgets.QWidget(MainWindow)
    self.centralwidget.setObjectName("centralwidget")
    self.label = QtWidgets.QLabel(self.centralwidget)
    self.label.setGeometry(QtCore.QRect(190, 130, 51, 31))
    self.label.setObjectName("label")
    self.pushButton = QtWidgets.QPushButton(self.centralwidget)
    self.pushButton.setGeometry(QtCore.QRect(330, 260, 75, 23))
    self.pushButton.setObjectName("pushButton")
    self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
    self.lineEdit.setGeometry(QtCore.QRect(280, 130, 151, 21))
    self.lineEdit.setObjectName("lineEdit")
    self.label_2 = QtWidgets.QLabel(self.centralwidget)
    self.label_2.setGeometry(QtCore.QRect(190, 180, 51, 31))
    self.label_2.setObjectName("label_2")
    self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
    self.lineEdit_2.setGeometry(QtCore.QRect(280, 190, 151, 21))
    self.lineEdit_2.setObjectName("lineEdit_2")
    self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
    self.pushButton_2.setGeometry(QtCore.QRect(200, 260, 75, 23))
    self.pushButton_2.setObjectName("pushButton_2")
    MainWindow.setCentralWidget(self.centralwidget)
    self.menubar = QtWidgets.QMenuBar(MainWindow)
    self.menubar.setGeometry(QtCore.QRect(0, 0, 624, 23))
    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.label.setText(_translate("MainWindow", "  长"))
    self.pushButton.setText(_translate("MainWindow", "返回"))
    self.label_2.setText(_translate("MainWindow", "  宽"))
    self.pushButton_2.setText(_translate("MainWindow", "确定"))
 
if __name__ == "__main__":
  app = QApplication(sys.argv)
  MainWindow = QMainWindow()
  ui = Ui_MainWindow()
  ui.setupUi(MainWindow)
  ex = FirstWindow()
  ex.btn.clicked.connect(MainWindow.show)
  ex.btn.clicked.connect(ex.close)
  ui.pushButton.clicked.connect(ex.show)
  ui.pushButton.clicked.connect(MainWindow.close)
  ex.show()
  sys.exit(app.exec_())
 

在这里插入图片描述

到此这篇关于Pyqt5设置返回键和跳转页面键的示例代码的文章就介绍到这了,更多相关Pyqt5 返回键和跳转页面键内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

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