WhyCan Forum(哇酷开发者社区)

# from PyQt4.QtGui import QWidget,QLabel,QDateEdit, QLineEdit, QApplication, QPushButton, QVBoxLayout
# from PyQt4.QtCore import pyqtSignal as Signal, pyqtSlot as Slot

# from PyQt5.QtWidgets import QWidget,QLabel,QDateEdit, QLineEdit, QApplication, QPushButton, QVBoxLayout
# from PyQt5.QtCore import pyqtSignal as Signal,pyqtSlot as Slot

# from PySide2.QtWidgets import QWidget,QLabel,QDateEdit, QLineEdit, QApplication, QPushButton, QVBoxLayout
# from PySide2.QtCore import Signal,Slot

from Qt.QtWidgets import QWidget,QLabel,QDateEdit, QLineEdit, QApplication, QPushButton, QVBoxLayout
from Qt.QtCore import Signal,Slot

import sys,os

class TestWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()
        self.count = 0

    #定义一个型号
    test_signal = Signal(int)

    #信号发送器
    def on_button_clicked(self):
       #self.close()
       self.count += 1
       self.test_signal.emit(self.count)

    # 信号接收器
    @Slot(int)
    def signal_receiver_test(self, value):
        self.editor.setText(str(value))

    def initUI(self):
        self.layout = QVBoxLayout()
        self.btn = QPushButton("信号发送测试(Qt Signal Test)", self)
        self.editor = QLineEdit("", self)
        self.layout.addWidget(self.btn)
        self.layout.addWidget(self.editor)
        self.setLayout(self.layout)
        self.btn.clicked.connect(self.on_button_clicked)
        self.test_signal.connect(self.signal_receiver_test)

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