PyQt5 - Python | QApplication.setStyle not working

Question

I am trying to set custom style to my PyQt5 application using the setStyle() method but it doesn't work.

I am also not entirely sure about where this should be put.

In my main I tried doing :

if __name__ == '__main__':

    QApplication.setStyle("mac") #here
    app = QApplication(sys.argv)
    splash_pix = QPixmap('../resource/logo.png')
    start = time.time()
    splash = QSplashScreen(splash_pix, Qt.WindowStaysOnTopHint)
    splash.show()
    while time.time() - start < 1:
        time.sleep(0.003)
        app.processEvents()
    ex = Fy360()
    splash.finish(ex)
    sys.exit(app.exec_())

Edit : Upon importing from PyQt5.QtWidgets import QStyleFactory and printing the QStyleFactory.keys() I gotthe output as:

[u'Windows', u'Fusion']

why are there only these options?

Whats going wrong here?

You can run the following command: `from PyQt5.QtWidgets import QStyleFactory; print(QStyleFactory.keys())` and show us what you — eyllanesc, May 13 '17 at 22:44
@eyllanesc sorry for the late reply, I did as you said but I got no output!. what does that mean? — Sapnesh Naik, May 14 '17 at 04:44
@eyllanesc I'm sorry I did a mistake, I tried to print the keys in a function hence I got no output but when I tried it in my main I got this `[u'Windows', u'Fusion'] ` — Sapnesh Naik, May 14 '17 at 04:50
Some styles are dependent on the OS, others are not, for example the Mac style is only for Mac OS, or for example fusion is compatible for several OS. — eyllanesc, May 14 '17 at 05:15
@eyllanesc okay, Thank you! one last thing. both available options make the app look out of place in my themed Ubuntu. Any way to make the application inherit the enabled theme? — Sapnesh Naik, May 14 '17 at 05:17
@eyllanesc I tried setting the `QT_STYLE_OVERRIDE`to gtk and gtk+ with no result — Sapnesh Naik, May 14 '17 at 05:28
install qt5ct: https://launchpad.net/~mati75/+archive/ubuntu/qt5ct — eyllanesc, May 14 '17 at 05:50
@eyllanesc finally solved it by installing `qt5ct` and `qt5-style-plugins` I had to set `QT_QPA_PLATFORMTHEME=qt5ct` in my /etc/environment file too. Then I simply chose gtk2 in qt5ct Do you mind summing up the whole thing as an answer? — Sapnesh Naik, May 14 '17 at 06:25

score 2 · Accepted Answer · answered May 14 '17 at 06:37

Some styles are dependent on the OS, others are not, for example the Mac style is only for Mac OS, or for example fusion is compatible for several OS.

Some styles (for example gtk) can be configured as follows:

Based on the discussion :

Install qt5-styleplugins and qt5ct
Set environment variable in /etc/environment QT_QPA_PLATFORMTHEME=qt5ct
Restart the system
Start qt5ct and select gtk2

PyQt5 - Python | QApplication.setStyle not working

1 Answers1