How to style the window decorations of a QGraphicsWidget with the Window flag?

Question

This short program

import sys

from PySide6.QtCore import Qt
from PySide6.QtWidgets import (
    QApplication,
    QGraphicsScene,
    QGraphicsView,
    QGraphicsWidget,
)

app = QApplication(sys.argv)

scene = QGraphicsScene()
view = QGraphicsView(scene)
view.resize(400, 300)

window = QGraphicsWidget(None, Qt.Window)
window.resize(200, 200)

scene.addItem(window)
view.setScene(scene)
view.show()
sys.exit(app.exec())

Produces the following output in windows:

Functionaly it is exactly what I want, since I can natively drag the window inside the GraphicsView. But I haven't found a way to change the style of the graphical elements that make up the window: titlebar, close button, frame.

QGraphicsWidget instances don't have a setStyleSheet method, and those elements are unaffected by the palette I setup to try to resemble a motif look:

        palette.setColor(QPalette.ColorRole.Window, QColor(212, 208, 200))
        palette.setColor(QPalette.ColorRole.WindowText, QColor(0, 0, 0))
        palette.setColor(QPalette.ColorRole.Base, QColor(212, 208, 200))
        palette.setColor(QPalette.ColorRole.AlternateBase, QColor(212, 208, 200))
        palette.setColor(QPalette.ColorRole.ToolTipBase, QColor(212, 208, 200))
        palette.setColor(QPalette.ColorRole.ToolTipText, QColor(0, 0, 0))
        palette.setColor(QPalette.ColorRole.Text, QColor(0, 0, 0))
        palette.setColor(QPalette.ColorRole.Button, QColor(212, 208, 200))
        palette.setColor(QPalette.ColorRole.ButtonText, QColor(0, 0, 0))
        palette.setColor(QPalette.ColorRole.BrightText, QColor(255, 255, 255))
        palette.setColor(QPalette.ColorRole.Link, QColor(0, 0, 255))
        palette.setColor(QPalette.ColorRole.Highlight, QColor(0, 0, 255))
        palette.setColor(QPalette.ColorRole.HighlightedText, QColor(255, 255, 255))
        palette.setColor(QPalette.ColorRole.Light, QColor(255, 255, 255))
        palette.setColor(QPalette.ColorRole.Midlight, QColor(212, 208, 200))
        palette.setColor(QPalette.ColorRole.Dark, QColor(128, 128, 128))
        palette.setColor(QPalette.ColorRole.Mid, QColor(160, 160, 160))
        palette.setColor(QPalette.ColorRole.Shadow, QColor(96, 96, 96))
        palette.setColor(QPalette.ColorRole.LinkVisited, QColor(0, 0, 255))
        palette.setColor(QPalette.ColorRole.WindowText, QColor(0, 0, 0))
        palette.setColor(QPalette.ColorRole.ButtonText, QColor(0, 0, 0))
        palette.setColor(QPalette.ColorRole.Text, QColor(0, 0, 0))
        palette.setColor(QPalette.ColorRole.BrightText, QColor(255, 255, 255))
        palette.setColor(QPalette.ColorRole.HighlightedText, QColor(255, 255, 255))
        palette.setColor(QPalette.ColorRole.Link, QColor(0, 0, 255))
        palette.setColor(QPalette.ColorRole.LinkVisited, QColor(0, 0, 255))

So what is the easiest way to style those elements, hopefully avoiding having to rewrite the code for painting the window frame, window movement and closing behaviour?

How to style the window decorations of a QGraphicsWidget with the Window flag?

0 Answers0