[qt5] slot & signal - slider

slider.py

__author__ = 'tom'

import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import (QWidget, QLCDNumber, QSlider,
                             QVBoxLayout, QApplication)


class Example(QWidget):
    def __init__(self):
        super().__init__()
        self.init_ui()

    def init_ui(self):
        lcd = QLCDNumber(self)
        sld = QSlider(Qt.Horizontal, self)

        v_box = QVBoxLayout()
        v_box.addWidget(lcd)
        v_box.addWidget(sld)

        self.setLayout(v_box)
        sld.valueChanged.connect(lcd.display)

        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Signal & slot')
        self.show()


if __name__ == "__main__":
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())