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Editorial Team
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Asked: 2026-06-18T23:40:16+00:00

How to set main window background transparent on QT? Do I need an attribute

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How to set main window background transparent on QT? Do I need an attribute or a style?
I’ve tried setting the opacity, but it didn’t work for me. 

app.setStyleSheet("QMainWindow {opacity:0}")
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1 Answer

  1. Editorial Team

    you must set new attribute for MainWindow object as below: 

    class Main(QtGui.QMainWindow):
      def __init__(self):
          self.setAttribute(Qt.WA_TranslucentBackground)
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