• pyqt5 处理传入 接受信号练习

    1. # -*- coding: utf-8 -*-
    2.  
    3. # Form implementation generated from reading ui file 'testtwo.ui'
    4. #
    5. # Created by: PyQt5 UI code generator 5.15.7
    6. #
    7. # WARNING: Any manual changes made to this file will be lost when pyuic5 is
    8. # run again.  Do not edit this file unless you know what you are doing.
    9.  
    10.  
    11. from PyQt5 import QtCore, QtGui, QtWidgets
    12. from PyQt5.QtCore import Qt
    13.  
    14.  
    15. class Ui_MainWindow(object):
    16.     def setupUi(self, MainWindow):
    17.         MainWindow.setObjectName("MainWindow")
    18.         MainWindow.resize(800, 600)
    19.         self.centralwidget = QtWidgets.QWidget(MainWindow)
    20.         self.centralwidget.setObjectName("centralwidget")
    21.         self.tabWidget = QtWidgets.QTabWidget(self.centralwidget)
    22.         self.tabWidget.setGeometry(QtCore.QRect(0, 0, 801, 571))
    23.         font = QtGui.QFont()
    24.         font.setFamily("Arial")
    25.         font.setPointSize(10)
    26.         self.tabWidget.setFont(font)
    27.         self.tabWidget.setObjectName("tabWidget")
    28.         self.tab = QtWidgets.QWidget()
    29.         self.tab.setObjectName("tab")
    30.         self.checkBox = QtWidgets.QCheckBox(self.tab)
    31.         self.checkBox.setGeometry(QtCore.QRect(10, 20, 91, 19))
    32.         self.checkBox.setObjectName("checkBox")
    33.         self.comboBox = QtWidgets.QComboBox(self.tab)
    34.         self.comboBox.setGeometry(QtCore.QRect(10, 60, 87, 22))
    35.         self.comboBox.setObjectName("comboBox")
    36.         self.dateEdit = QtWidgets.QDateEdit(self.tab)
    37.         self.dateEdit.setGeometry(QtCore.QRect(20, 100, 110, 22))
    38.         self.dateEdit.setObjectName("dateEdit")
    39.         self.dateTimeEdit = QtWidgets.QDateTimeEdit(self.tab)
    40.         self.dateTimeEdit.setGeometry(QtCore.QRect(10, 160, 194, 22))
    41.         self.dateTimeEdit.setObjectName("dateTimeEdit")
    42.         self.tabWidget.addTab(self.tab, "")
    43.         self.tab_3 = QtWidgets.QWidget()
    44.         self.tab_3.setObjectName("tab_3")
    45.         self.dial = QtWidgets.QDial(self.tab_3)
    46.         self.dial.setGeometry(QtCore.QRect(50, 80, 50, 64))
    47.         self.dial.setObjectName("dial")
    48.         self.doubleSpinBox = QtWidgets.QDoubleSpinBox(self.tab_3)
    49.         self.doubleSpinBox.setGeometry(QtCore.QRect(40, 190, 70, 22))
    50.         self.doubleSpinBox.setObjectName("doubleSpinBox")
    51.         self.fontComboBox = QtWidgets.QFontComboBox(self.tab_3)
    52.         self.fontComboBox.setGeometry(QtCore.QRect(30, 260, 279, 22))
    53.         self.fontComboBox.setObjectName("fontComboBox")
    54.         self.lcdNumber = QtWidgets.QLCDNumber(self.tab_3)
    55.         self.lcdNumber.setGeometry(QtCore.QRect(40, 310, 64, 23))
    56.         self.lcdNumber.setSmallDecimalPoint(True)
    57.         self.lcdNumber.setMode(QtWidgets.QLCDNumber.Oct)
    58.         self.lcdNumber.setProperty("value", 125.0)
    59.         self.lcdNumber.setObjectName("lcdNumber")
    60.         self.label = QtWidgets.QLabel(self.tab_3)
    61.         self.label.setGeometry(QtCore.QRect(450, 380, 211, 81))
    62.         self.label.setObjectName("label")
    63.         self.tabWidget.addTab(self.tab_3, "")
    64.         self.tab_4 = QtWidgets.QWidget()
    65.         self.tab_4.setObjectName("tab_4")
    66.         self.lineEdit = QtWidgets.QLineEdit(self.tab_4)
    67.         self.lineEdit.setGeometry(QtCore.QRect(40, 50, 113, 21))
    68.         self.lineEdit.setObjectName("lineEdit")
    69.         self.progressBar = QtWidgets.QProgressBar(self.tab_4)
    70.         self.progressBar.setGeometry(QtCore.QRect(40, 180, 118, 23))
    71.         self.progressBar.setProperty("value", 50)
    72.         self.progressBar.setObjectName("progressBar")
    73.         self.pushButton = QtWidgets.QPushButton(self.tab_4)
    74.         self.pushButton.setGeometry(QtCore.QRect(40, 260, 93, 28))
    75.         self.pushButton.setObjectName("pushButton")
    76.         self.radioButton = QtWidgets.QRadioButton(self.tab_4)
    77.         self.radioButton.setGeometry(QtCore.QRect(40, 310, 115, 19))
    78.         self.radioButton.setObjectName("radioButton")
    79.         self.tabWidget.addTab(self.tab_4, "")
    80.         self.tab_2 = QtWidgets.QWidget()
    81.         self.tab_2.setObjectName("tab_2")
    82.         self.horizontalSlider = QtWidgets.QSlider(self.tab_2)
    83.         self.horizontalSlider.setGeometry(QtCore.QRect(90, 110, 160, 22))
    84.         self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
    85.         self.horizontalSlider.setObjectName("horizontalSlider")
    86.         self.verticalScrollBar = QtWidgets.QScrollBar(self.tab_2)
    87.         self.verticalScrollBar.setGeometry(QtCore.QRect(100, 170, 16, 160))
    88.         self.verticalScrollBar.setOrientation(QtCore.Qt.Vertical)
    89.         self.verticalScrollBar.setObjectName("verticalScrollBar")
    90.         self.verticalSlider = QtWidgets.QSlider(self.tab_2)
    91.         self.verticalSlider.setGeometry(QtCore.QRect(440, 100, 22, 160))
    92.         self.verticalSlider.setOrientation(QtCore.Qt.Vertical)
    93.         self.verticalSlider.setObjectName("verticalSlider")
    94.         self.spinBox = QtWidgets.QSpinBox(self.tab_2)
    95.         self.spinBox.setGeometry(QtCore.QRect(510, 90, 46, 22))
    96.         self.spinBox.setObjectName("spinBox")
    97.         self.timeEdit = QtWidgets.QTimeEdit(self.tab_2)
    98.         self.timeEdit.setGeometry(QtCore.QRect(480, 330, 118, 22))
    99.         self.timeEdit.setObjectName("timeEdit")
    100.         self.tabWidget.addTab(self.tab_2, "")
    101.         MainWindow.setCentralWidget(self.centralwidget)
    102.         self.menubar = QtWidgets.QMenuBar(MainWindow)
    103.         self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
    104.         self.menubar.setObjectName("menubar")
    105.         MainWindow.setMenuBar(self.menubar)
    106.         self.statusbar = QtWidgets.QStatusBar(MainWindow)
    107.         self.statusbar.setObjectName("statusbar")
    108.         MainWindow.setStatusBar(self.statusbar)
    109.  
    110.         self.retranslateUi(MainWindow)
    111.         self.tabWidget.setCurrentIndex(1)
    112.         QtCore.QMetaObject.connectSlotsByName(MainWindow)
    113.     def checkboxshow(self,s):
    114.         #self.label.setText(str(s))
    115.         if s==0:self.label.setPixmap(QtGui.QPixmap(r"C:\Users\komorip\Desktop\daliy\python\uidesign\iconn\q11.jpg"))
    116.         else:
    117.             self.label.setText(str(s))
    118.     def comboxshow_index(self,i):
    119.         print(i)
    120.     def comboxshow_text(self,s):
    121.         global q  #先声明再赋值
    122.         q=int(s)  #赋值即使同名也会创建局部作用域的变量  所以想要赋值到全局变量必须声明
    123.  
    124.     def compute(self,b,s=1):
    125.         self.label.setText(str(b*s))
    126.         #print(b*s)
    127.  
    128.  
    129.  
    130.     def retranslateUi(self, MainWindow):
    131.         _translate = QtCore.QCoreApplication.translate
    132.         MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
    133.         self.checkBox.setText(_translate("MainWindow", "你是猪"))
    134.         self.checkBox.setCheckState(Qt.Checked)
    135.         self.checkBox.stateChanged.connect(self.checkboxshow)#不带括号
    136.         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab), _translate("MainWindow", " 1"))
    137.         #self.label.setText(_translate("MainWindow", "你是猪"))
    138.         #self.label.setPixmap(QtGui.QPixmap(r"C:\Users\komorip\Desktop\daliy\python\uidesign\iconn\q11.jpg"))
    139.         self.label.setScaledContents(True)
    140.         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_3), _translate("MainWindow", "2"))
    141.         self.pushButton.setText(_translate("MainWindow", "PushButton"))
    142.         self.radioButton.setText(_translate("MainWindow", "RadioButton"))
    143.         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_4), _translate("MainWindow", "3"))
    144.         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_2), _translate("MainWindow", "4"))
    145.         self.comboBox.addItems(["1","2","3","4","5"])
    146.         #self.comboBox.currentIndexChanged.connect(self.comboxshow_index)
    147.         #self.comboBox.currentTextChanged.connect(self.comboxshow_text)#传参时使用这一条并且一开始会有一个默认情况设定
    148.  
    149. if __name__ == "__main__":
    150.     import sys
    151.     app = QtWidgets.QApplication(sys.argv)
    152.     MainWindow = QtWidgets.QMainWindow()
    153.     ui = Ui_MainWindow()
    154.     ui.setupUi(MainWindow)
    155.     MainWindow.show()
    156.     q = 1
    157.     ui.comboBox.currentTextChanged.connect(ui.comboxshow_text)
    158.     ui.pushButton.clicked.connect(lambda:ui.compute(3,q))#链接调用有参数的函数需要lambda   按钮是解决时空问题的关键   默认值需要搭配 全局变量
    159.     sys.exit(app.exec_())

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  • 原文地址：https://blog.csdn.net/m0_45359314/article/details/126733765