Slider.py 文件源码

def init_ui(self):
        self.le = QLineEdit()
        self.b1 = QPushButton('Clear')
        self.b2 = QPushButton('Print')
        self.s1 = QSlider(Qt.Horizontal)
        self.s1.setMinimum(1)
        self.s1.setMaximum(99)
        self.s1.setValue(25)
        self.s1.setTickInterval(10)
        self.s1.setTickPosition(QSlider.TicksBelow)

        v_box = QVBoxLayout()
        v_box.addWidget(self.le)
        v_box.addWidget(self.b1)
        v_box.addWidget(self.b2)
        v_box.addWidget(self.s1)

        self.setLayout(v_box)
        self.setWindowTitle('PyQt5 Lesson 8')

        self.b1.clicked.connect(lambda: self.btn_clk(self.b1, 'Hello from Clear'))
        self.b2.clicked.connect(lambda: self.btn_clk(self.b2, 'Hello from Print'))
        self.s1.valueChanged.connect(self.v_change)

        self.show()