信号和槽自动链接20221021

方式1:为每个控件写信号和槽关联

self.okButton.clicked.connect(self.on_okBtn_clicked)

方式2:自动找名字符合这个规范的槽函数进行绑定

控件名字想好比如itemsName,然后直接就写槽函数 on_itemsName_clicked,用QtCore.pyqtSlot()注册一下
# on_objectname_signalname

代码

from PyQt5.QtCore import QThread,pyqtSignal,QDateTime
from PyQt5 import QtCore
from PyQt5.QtWidgets import QWidget,QApplication,QDialog,QLineEdit,QPushButton,QHBoxLayout
import time
import sys


class AutoSignalSlot(QWidget):
    def __init__(self, parent=None):
        super(AutoSignalSlot, self).__init__(parent)
        self.okButton = QPushButton("OK",self)
        self.okButton.setObjectName('OkBtn') #为控件起名字

        self.CancelButton = QPushButton("Cancel", self)
        self.CancelButton.setObjectName('CancelBtn')  # 为控件起名字

        layout = QHBoxLayout()
        layout.addWidget(self.okButton)
        layout.addWidget(self.CancelButton)
        self.setLayout(layout)

        #方式1:
        #self.okButton.clicked.connect(self.on_okBtn_clicked)

        # 方式2:控件名字想好比如itemsName,然后直接就写槽函数 on_itemsName_clicked,用QtCore.pyqtSlot()注册一下
        # on_objectname_signalname
        # 自动找名字符合这个规范的槽函数进行绑定
        QtCore.QMetaObject.connectSlotsByName(self)

    # 方式1:
    # def on_okBtn_clicked(self):
    #     print("方式1on_okBtn_clicked")

    #方式2:
    @QtCore.pyqtSlot()
    def on_OkBtn_clicked(self):
        print('第二个方式点击okButton')

    @QtCore.pyqtSlot()
    def on_CancelBtn_clicked(self):
        print('第二个方式点击CancelBtn')

if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = AutoSignalSlot()
    main.show()
    sys.exit(app.exec_())

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