pyqt5 之 信号+槽 測試用例

    在使用pycharm進行編寫代碼的時候，發現信号設定了connect一個槽，但是測試發現沒有起作用，另外，在pycharm編輯器上connect提示沒有這個函數，總是找不到原因，後面決定還是對碰到相應的知識點需要做對應的測試用例進行學習和驗證。

#-*- coding:utf-8 -*-
'''
Signal & Slot
'''
__author__ = 'Tony Zhu'

import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import (QWidget, QLCDNumber, QSlider,QGridLayout,QLabel,QHBoxLayout, QGroupBox,
    QVBoxLayout, QApplication,QProgressBar,QPushButton,QMessageBox)


class SignalSlot(QWidget):

    def __init__(self):
        super(SignalSlot,self).__init__()
        self.initUI()


    def initUI(self):

        self.controlsGroup = QGroupBox("運作樣本")
        self.lcdNumber = QLCDNumber(self)
        self.slider = QSlider(Qt.Horizontal, self)
        self.pBar = QProgressBar(self)
        vbox = QVBoxLayout()
        vbox.addWidget(self.pBar)
        vbox.addWidget(self.lcdNumber)
        vbox.addWidget(self.slider)
        self.controlsGroup.setLayout(vbox)

        controlsLayout = QGridLayout()
        self.label1 = QLabel("儲存狀态：")
        self.saveLabel = QLabel()
        self.label2 = QLabel("運作狀态：")
        self.runLabel = QLabel()
        self.buttonSave = QPushButton("儲存")
        self.buttonRun = QPushButton("運作")
        self.buttonStop = QPushButton("停止")
        self.buttonDisconnect = QPushButton("解除關聯")
        self.buttonConnect = QPushButton("綁定關聯")

        controlsLayout.addWidget(self.label1,0,0)
        controlsLayout.addWidget(self.saveLabel,0,1)
        controlsLayout.addWidget(self.label2,1,0)
        controlsLayout.addWidget(self.runLabel,1,1)
        controlsLayout.addWidget(self.buttonSave,2,0)
        controlsLayout.addWidget(self.buttonRun,2,1)
        controlsLayout.addWidget(self.buttonStop,2,2)
        controlsLayout.addWidget(self.buttonDisconnect,3,0)
        controlsLayout.addWidget(self.buttonConnect,3,1)

        layout = QHBoxLayout()
        layout.addWidget(self.controlsGroup)
        layout.addLayout(controlsLayout)
        self.setLayout(layout)

        self.buttonRun.clicked.connect(self.buttonSave.clicked)
        self.slider.valueChanged.connect(self.pBar.setValue)
        self.slider.valueChanged.connect(self.lcdNumber.display)
        self.buttonSave.clicked.connect(self.showMessage)
        self.buttonRun.clicked.connect(self.showMessage)
        self.buttonDisconnect.clicked.connect(self.unbindConnection)
        self.buttonConnect.clicked.connect(self.bindConnection)
        self.buttonStop.clicked.connect(self.stop)

        self.setGeometry(300, 500, 500, 180)
        self.setWindowTitle('信号和槽')

    def showMessage(self):
        if self.sender().text() == "儲存":
            self.saveLabel.setText("Saved")
        elif self.sender().text() == "運作":
            self.saveLabel.setText("Saved")
            self.runLabel.setText("Running")

    def unbindConnection(self):
        self.slider.valueChanged.disconnect()
    def bindConnection(self):
        self.slider.valueChanged.connect(self.pBar.setValue)
        self.slider.valueChanged.connect(self.lcdNumber.display)
    def stop(self):
        self.saveLabel.setText("")
        self.runLabel.setText("")

if __name__ == '__main__':

    app = QApplication(sys.argv)
    ex = SignalSlot()
    ex.show()
    sys.exit(app.exec_())