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Glep FingermanJan. 10, 2021, 11:52 a.m.
Сигналы и слоты в PyQt5
Пример тестового интерфейса с описанием подключения слота и сигнала, но оно не срабатывает по непонятным причинам.
import sys, binascii, glob, asyncio from PyQt5.QtCore import QObject, pyqtSlot, QDateTime, Qt, QTimer from PyQt5 import QtCore, QtGui, QtWidgets from PyQt5.QtWidgets import (QApplication, QCheckBox, QComboBox, QDateTimeEdit, QDial, QDialog, QGridLayout, QGroupBox, QHBoxLayout, QLabel, QLineEdit, QProgressBar, QPushButton, QRadioButton, QScrollBar, QSizePolicy, QSlider, QSpinBox, QStyleFactory, QTableWidget, QTabWidget, QTextEdit, QVBoxLayout, QWidget, QMainWindow, QMessageBox) class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow"); MainWindow.resize(400, 300); self.centralWidget = QtWidgets.QWidget(MainWindow); self.centralWidget.setObjectName("centralWidget"); self.gridLayout = QtWidgets.QGridLayout(self.centralWidget); self.gridLayout.setContentsMargins(11,11,11,11); self.gridLayout.setSpacing(6); self.gridLayout.setObjectName("gridLayout"); self.verticalLayout = QtWidgets.QVBoxLayout(); self.verticalLayout.setSpacing(6); self.verticalLayout.setObjectName("verticalLayout"); self.pushButtonFirst = QtWidgets.QPushButton(self.centralWidget); self.pushButtonFirst.setObjectName("pushButtonFirst");self.verticalLayout.addWidget(self.pushButtonFirst); self.pushButtonSecond = QtWidgets.QPushButton(self.centralWidget); self.pushButtonSecond.setObjectName("pushButtonSecond");self.verticalLayout.addWidget(self.pushButtonSecond); self.checkBox = QtWidgets.QCheckBox(self.centralWidget); self.checkBox.setObjectName("checkBox"); self.verticalLayout.addWidget(self.checkBox); self.lineEdit = QtWidgets.QLineEdit(self.centralWidget); self.lineEdit.setObjectName("lineEdit"); self.verticalLayout.addWidget(self.lineEdit); self.gridLayout.addLayout(self.verticalLayout,0,0,1,1);MainWindow.setCentralWidget(self.centralWidget); self.menuBar = QtWidgets.QMenuBar(MainWindow);self.menuBar.setGeometry(QtCore.QRect(0,0,400,21)); self.menuBar.setObjectName("menuBar");MainWindow.setMenuBar(self.menuBar); self.mainToolBar = QtWidgets.QToolBar(MainWindow);self.mainToolBar.setObjectName("mainToolBar"); MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar); 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.pushButtonFirst.setText(_translate("MainWindow", "PushButton")) self.pushButtonSecond.setText(_translate("MainWindow", "PushButton")) self.checkBox.setText(_translate("MainWindow", "CheckBox")) class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow): def __init__(self, parent=None): super(MainWindow, self).__init__(parent); self.setupUi(self); self.pushButtonFirst.released.connect(self.pushButtonClicked) #self.pushButtonFirst.clicked.connect(self.pushButtonClicked) @QtCore.pyqtSlot() def pushButtonClicked(self): try: sender = self.sender(); self.statusBar().showMessage(sender.text() + ' was pressed') msg = QMessageBox(); msg.setIcon(QMessageBox.Information); msg.setText("This is a message box"); msg.setInformativeText("This is additional information"); msg.setWindowTitle("MessageBox demo"); msg.setDetailedText("The details are as follows:"); msg.setStandardButtons(QMessageBox.Ok | QMessageBox.Cancel); msg.exec_(); except Exception as e: return str(e); if __name__ == "__main__": app=QtWidgets.QApplication(sys.argv); w=MainWindow(); w.show(); sys.exit(app.exec_())
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Игорь МаксимовOct. 3, 2024, 11:05 a.m.
Попробуйте сделать всю работу с одном в одном классе. И лучше проверяйте нажатие кнопки.
Решение стало следующим: после конвертации файла Ui из QtDesigner мне никак не выгодно продолжать работать в этом же файле, т.к. я постоянно продолжаю дорабатывать интерфейс, а его поведение я описываю в другом файле, поэтому я делаю следующее описание
Затем я создаю класс, в котором описываю подключение интерфейса и создание слотов для элементов управления
В таком случае я безпрепятственно постоянно могу корректировать интерфейс и безпрепятственно ориентироваться в другом классе для управления поведением новыми элементами управления.