QSlider、QSpinBox

QSlider

'''

滑块控件（QSlider）

'''

import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *

class QSliderDemo(QWidget):
    def __init__(self):
        super(QSliderDemo,self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('滑块控件演示')
        self.resize(300,700)

        layout = QVBoxLayout()
        self.label = QLabel('你好 PyQt5')
        self.label.setAlignment(Qt.AlignCenter)

        layout.addWidget(self.label)

        self.slider = QSlider(Qt.Horizontal)



        # 设置最小值
        self.slider.setMinimum(12)
        # 设置最大值
        self.slider.setMaximum(48)

        # 步长
        self.slider.setSingleStep(3)

        # 设置当前值
        self.slider.setValue(18)

        # 设置刻度的位置，刻度在下方
        self.slider.setTickPosition(QSlider.TicksBelow)
        # 设置刻度的间隔
        self.slider.setTickInterval(6)

        layout.addWidget(self.slider)
        self.slider.valueChanged.connect(self.valueChange)

        self.slider1 = QSlider(Qt.Vertical)
        layout.addWidget(self.slider1)
        # 设置最小值
        self.slider1.setMinimum(10)
        # 设置最大值
        self.slider1.setMaximum(60)

        # 步长
        self.slider1.setSingleStep(5)

        # 设置当前值
        self.slider1.setValue(30)

        # 设置刻度的位置，刻度在下方
        self.slider1.setTickPosition(QSlider.TicksLeft)
        # 设置刻度的间隔
        self.slider1.setTickInterval(2)
        self.slider1.valueChanged.connect(self.valueChange)
        self.setLayout(layout)

    def valueChange(self):
        print('当前值：%s' % self.sender().value())
        size = self.sender().value()
        self.label.setFont(QFont('Arial',size))
if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = QSliderDemo()
    main.show()
    sys.exit(app.exec_())

---

QSpinBox

'''

计数器控件（QSpinBox）



'''

import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *

class QSpinBoxDemo(QWidget):
    def __init__(self):
        super(QSpinBoxDemo,self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('QSpinBox演示')
        self.resize(300,100)

        layout = QVBoxLayout()
        self.label = QLabel('当前值')
        self.label.setAlignment(Qt.AlignCenter)

        layout.addWidget(self.label)

        self.sb = QSpinBox()
        self.sb.setValue(18)
        self.sb.setRange(10,38)
        self.sb.setSingleStep(3)
        layout.addWidget(self.sb)
        self.sb.valueChanged.connect(self.valueChange)
        self.setLayout(layout)

    def valueChange(self):
        self.label.setText('当前值：' + str(self.sb.value()))

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