Sliders in Python PyQt5

PyQt5 comes with sliders out of the box.

Sliders can be either vertical or horizontal. We can connect them with a method the same way as we do with buttons.

A slider is often used in conjunction with a spinbox, QSpinBox. In this example we won’t use a spinbox, as that’s optional. You can connect a slider to any widget or functionality you want.

Slider example
We create a groupbox which contains 4 sliders. A slider is created with the class QSlider, which accepts the flags Qt.Horizontal or Qt.Vertical.

If you want to add a slider to your existing code, don’t forget to import QSlider from PyQt5.QtWidgets.

# pythonprogramminglanguage.com
import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import (QApplication, QCheckBox, QGridLayout, QGroupBox,
                             QMenu, QPushButton, QRadioButton, QVBoxLayout, QWidget, QSlider)

class Window(QWidget):
    def __init__(self, parent=None):
        super(Window, self).__init__(parent)

        grid = QGridLayout()
        grid.addWidget(self.createExampleGroup(), 0, 0)
        grid.addWidget(self.createExampleGroup(), 1, 0)
        grid.addWidget(self.createExampleGroup(), 0, 1)
        grid.addWidget(self.createExampleGroup(), 1, 1)
        self.setLayout(grid)

        self.setWindowTitle("PyQt5 Sliders")
        self.resize(400, 300)

    def createExampleGroup(self):
        groupBox = QGroupBox("Slider Example")

        radio1 = QRadioButton("&Radio horizontal slider")

        slider = QSlider(Qt.Horizontal)
        slider.setFocusPolicy(Qt.StrongFocus)
        slider.setTickPosition(QSlider.TicksBothSides)
        slider.setTickInterval(10)
        slider.setSingleStep(1)

        radio1.setChecked(True)

        vbox = QVBoxLayout()
        vbox.addWidget(radio1)
        vbox.addWidget(slider)
        vbox.addStretch(1)
        groupBox.setLayout(vbox)

        return groupBox

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

If you are new to Python PyQt, then I highly recommend this book.

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