PyQt5 QCalendarWidget - Setting Border to the QWidget child

PyQt5 QCalendarWidget - Setting Border to the QWidget child

To set a border to the QWidget child of a QCalendarWidget, you would typically use Qt's stylesheet mechanism. In Qt, most visual aspects of widgets can be styled using stylesheets, which are somewhat similar to CSS for web.

Here's a simple example where we apply a border to all child QWidget instances of a QCalendarWidget:

import sys from PyQt5.QtWidgets import QApplication, QMainWindow, QCalendarWidget class MainWindow(QMainWindow): def __init__(self): super().__init__() self.calendar = QCalendarWidget(self) self.calendar.setGeometry(10, 10, 300, 200) # Set border for all child QWidgets of the QCalendarWidget self.calendar.setStyleSheet("QWidget { border: 2px solid red; }") if __name__ == "__main__": app = QApplication(sys.argv) window = MainWindow() window.setGeometry(100, 100, 400, 300) window.show() sys.exit(app.exec_())

In the code above, the line:

self.calendar.setStyleSheet("QWidget { border: 2px solid red; }")

sets a 2-pixel-wide red border for all child QWidget instances of the QCalendarWidget.

If you want to target a specific type of child widget or a specific widget, you'd refine the selector in the stylesheet. For a deep customization, you might need to familiarize yourself with the structure of the QCalendarWidget and potentially target specific internal classes or objects. This often requires a bit of experimentation or checking the Qt source/documentation to understand the widget's internal structure.

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