How to create a borderless window in PyQt5

To achieve a borderless window, you can use the setWindowFlag() method to set the window flag Qt.FramelessWindowHint. Here is a simple example:

from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtCore import Qt

app = QApplication([])
window = QWidget()
window.setWindowFlag(Qt.FramelessWindowHint)
window.show()
app.exec_()

In the above example, the setWindowFlag() method is used to set the window’s flag to Qt.FramelessWindowHint, causing the window to have no borders. The window is then displayed using the show() method, and the application’s event loop is initiated by calling app.exec_().

Additionally, you can customize the appearance and behavior of the window further by using the setWindowFlag() method to set additional window flags as needed.