[PyQt5]基本控件21 - 滚动条QScrollBar

import sys from PyQt5.QtWidgets import QLabel,QScrollBar,QHBoxLayout,QWidget,QApplication,QMainWindow class QScrollBarDemo(QMainWindow): def __init__(self): super(QScrollBarDemo, self).__init__() self.resize(400, 150) #设置窗口标题 self.setWindowTitle("QScrollBarDemo") self.label = QLabel('滚动条的值') self.scrollBar1 = QScrollBar() self.scrollBar1.setMaximum(255) self.scrollBar1.sliderMoved.connect(self.sliderChange) self.scrollBar2 = QScrollBar() self.scrollBar2.setMaximum(255) self.scrollBar2.sliderMoved.connect(self.sliderChange) layout = QHBoxLayout() layout.addWidget(self.label) layout.addWidget(self.scrollBar1) layout.addWidget(self.scrollBar2) mainFrame = QWidget() mainFrame.setLayout(layout) self.setCentralWidget(mainFrame) def sliderChange(self): self.label.setText("滚动条1的值:"+str(self.scrollBar1.value())+", 滚动条2的值:"+str(self.scrollBar2.value())) if __name__ == '__main__': app = QApplication(sys.argv) main = QScrollBarDemo() main.show() sys.exit(app.exec_())