PyQt5 QScrollBar - Setting Inverted Appearance Property

PyQt5 QScrollBar - Setting Inverted Appearance Property

In PyQt5, the QScrollBar widget provides a vertical or horizontal scroll bar. The setInvertedAppearance() method of QScrollBar is used to set the inverted appearance property of the scrollbar. When this property is set to True, the scrollbar's appearance is inverted; that is, the positions of the top/bottom or left/right arrows are swapped.

Here's how to use setInvertedAppearance() to invert the appearance of a QScrollBar:

  • Make sure you have PyQt5 installed:
pip install PyQt5
  • Here's an example to demonstrate the use of setInvertedAppearance():
import sys from PyQt5.QtWidgets import QApplication, QMainWindow, QScrollBar, QVBoxLayout, QWidget class MainWindow(QMainWindow): def __init__(self): super().__init__() # Initialize vertical scrollbar self.scrollbar = QScrollBar(self) # Set inverted appearance self.scrollbar.setInvertedAppearance(True) # Set up layout and central widget layout = QVBoxLayout() layout.addWidget(self.scrollbar) central_widget = QWidget() central_widget.setLayout(layout) self.setCentralWidget(central_widget) self.setWindowTitle("QScrollBar Inverted Appearance Demo") self.setGeometry(100, 100, 300, 400) if __name__ == '__main__': app = QApplication(sys.argv) window = MainWindow() window.show() sys.exit(app.exec_())

In the above code, we create a QMainWindow containing a vertical QScrollBar. We then set its appearance to inverted using setInvertedAppearance(True). When you run the program, you'll observe that the positions of the top and bottom arrows of the scrollbar are swapped.

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