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PyQt5 QDockWidget – Window Title Changed Signal

  • Last Updated : 28 Jul, 2020

In this article we will see how we can get the window title changed signal of the QDockWidget. QDockWidget provides the concept of dock widgets, also know as tool palettes or utility windows. Dock windows are secondary windows placed in the dock widget area around the central widget in a QMainWindow(original window).
Window title property holds the dock widget title (caption), it can be set with the help of setWindowTitle method. This signal is emitted when the dick widget window’s title has changed.

In order to do this we will use windowTitleChanged method with the dock widget object.

Syntax : dock.windowTitleChanged.connect(method)

Argument : It takes method as argument

Return : It returns None



Below is the implementation




# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 500, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for components
    def UiComponents(self):
  
        # creating dock widget
        dock = QDockWidget(self)
  
        # setting title to the doc widget
        dock.setWindowTitle("GfG Dock")
      
  
        # push button
        push = QPushButton("Press", self)
  
        # setting floating property
        dock.setFloating(False)
  
        # setting widget to the dock
        dock.setWidget(push)
  
        # creating a label
        label = QLabel("GeeksforGeeks", self)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 300, 80)
  
        # making label multi line
        label.setWordWrap(True)
  
        # setting geometry tot he dock widget
        dock.setGeometry(100, 0, 200, 30)
  
        # getting window title changed signal
        # setting text to the label
        dock.windowTitleChanged.connect(lambda: label.setText("Title Changed Signal Emitted"))
  
        # changing title of dock widget
        dock.setWindowTitle("GeeksforGeeks")
  
  
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

Output :

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