How to change the window title in pyside?

Question

I have read the documentation on the following matter, but `Qt` is so overwhelmingly complex I might have missed the piece. I have created a `QMainWindow` and set a title using `self.setWindowTitle`. Later in the code I want to simply change this title and so I used the method `self.setWindowTitle` again. But this only removed the title from my application, but put the correct title on the panel in Ubuntu. Further explanation on an Ubuntu system: For example, When I edit this text in the webbrowser window the title says 'How to change the window...' and on the panel on the top of the computer screen I see the text 'Firefox Web Browser'. My `pyside` Qt example now removes the title from the application window and puts it instead on the upper hand panel. Do I need a different method other than `setWindowTitle` to change the title? Maybe from the centralWidget, or MenuBar, or some other element? And why did the title vanish in the first place? Ubuntu screenshot after first call of `setWi…

Accepted Answer

```
import sys
from PySide import QtGui, QtCore

class Example(QtGui.QWidget):

def __init__(self):
        super(Example, self).__init__()

self.initUI()

def initUI(self):

cb = QtGui.QCheckBox('Show title', self)
        cb.move(20, 20)
        cb.toggle()
        cb.stateChanged.connect(self.changeTitle)

self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('QtGui.QCheckBox')
        self.show()

def changeTitle(self, state):

if state == QtCore.Qt.Checked:
            self.setWindowTitle('Checkbox')
        else:
            self.setWindowTitle('')

def main():

app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()
```

Source: http://zetcode.com/gui/pysidetutorial/widgets/

How to change the window title in pyside?

Solution

Problem