PyQt 信号与槽的机制案例（2）

青旅半醒 2023-06-17 04:59 41阅读 0赞

Checkbox  信号槽 setvisible  和 setEnable 的使用：

te.ui

![20191127213655881.png][]

te.py:

# -*- coding: utf-8 -*-
    
    # Form implementation generated from reading ui file 'te.ui'
    #
    # Created by: PyQt5 UI code generator 5.6
    #
    # WARNING! All changes made in this file will be lost!
    
    from PyQt5 import QtCore, QtGui, QtWidgets
    
    class Ui_MainWindow(object):
        def setupUi(self, MainWindow):
            MainWindow.setObjectName("MainWindow")
            MainWindow.resize(800, 241)
            self.centralwidget = QtWidgets.QWidget(MainWindow)
            self.centralwidget.setObjectName("centralwidget")
            self.checkBox = QtWidgets.QCheckBox(self.centralwidget)
            self.checkBox.setGeometry(QtCore.QRect(120, 70, 71, 16))
            self.checkBox.setObjectName("checkBox")
            self.label = QtWidgets.QLabel(self.centralwidget)
            self.label.setGeometry(QtCore.QRect(110, 140, 54, 41))
            self.label.setObjectName("label")
            MainWindow.setCentralWidget(self.centralwidget)
            self.menubar = QtWidgets.QMenuBar(MainWindow)
            self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 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)
            self.checkBox.clicked['bool'].connect(self.label.setVisible)
            QtCore.QMetaObject.connectSlotsByName(MainWindow)
    
        def retranslateUi(self, MainWindow):
            _translate = QtCore.QCoreApplication.translate
            MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
            self.checkBox.setText(_translate("MainWindow", "CheckBox"))
            self.label.setText(_translate("MainWindow", "TextLabel"))

main.py

import sys
    from PyQt5.QtCore import pyqtSlot
    from PyQt5.QtWidgets import QMainWindow, QApplication
    from  te import Ui_MainWindow
    from PyQt5.QtCore import pyqtSignal , Qt 
    class MyMainWindow(QMainWindow, Ui_MainWindow): 
        def __init__(self, parent=None):  
          super(MyMainWindow,self).__init__(parent)
          self.setupUi(self)
          self.checkBox.setChecked(True) # 设置checkBox默认的初始状态为选择
          
    if __name__=="__main__":  
    	app = QApplication(sys.argv)  
    	win = MyMainWindow()  
    	win.show()  
    	sys.exit(app.exec_())

运行结果：

![20191127213815425.png][]

基本知识点： 下拉选框选择

![20191127160325115.png][]       ![20191127160347558.png][]

pList.append(self.styleCombo.currentText())

![20191127210804792.png][]

pList.append(self.numberSpinBox.value() )

![20191127211624625.png][]![20191127211643582.png][]

self.checkBox.setChecked(True) # 设置checkBox默认的初始状态为选择

[20191127213655881.png]: https://img-blog.csdnimg.cn/20191127213655881.png
[20191127213815425.png]: https://img-blog.csdnimg.cn/20191127213815425.png
[20191127160325115.png]: https://img-blog.csdnimg.cn/20191127160325115.png
[20191127160347558.png]: https://img-blog.csdnimg.cn/20191127160347558.png
[20191127210804792.png]: https://img-blog.csdnimg.cn/20191127210804792.png
[20191127211624625.png]: https://img-blog.csdnimg.cn/20191127211624625.png
[20191127211643582.png]: https://img-blog.csdnimg.cn/20191127211643582.png