PyQt5 QSpinBox - Adding border to the down button on mouse hover

PyQt5 QSpinBox - Adding border to the down button on mouse hover

If you want to add a border to the down button of a QSpinBox on mouse hover in PyQt5, you can use the power of Qt's stylesheets. Stylesheets in Qt offer a way to style widgets using a syntax that's somewhat similar to CSS for web design.

Here's an example where we add a border to the down button of a QSpinBox when the mouse hovers over it:

import sys from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QSpinBox class AppDemo(QWidget): def __init__(self): super().__init__() layout = QVBoxLayout() spinBox = QSpinBox(self) layout.addWidget(spinBox) # Set stylesheet for the spin box spinBox.setStyleSheet(""" QSpinBox::down-button:hover { border: 2px solid red; } """) self.setLayout(layout) if __name__ == '__main__': app = QApplication(sys.argv) window = AppDemo() window.show() sys.exit(app.exec_())

In this code, the stylesheet is applied to the QSpinBox such that when you hover over the down button, a red border with a width of 2 pixels will be shown. You can modify the stylesheet to customize the look further.

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