PyQt5 QColorDialog – Current Color Changed Signal
In this article we will see how we can get the current color changed signal of the QColorDialog widget. This signal is emitted whenever the current color changes in the dialog. The current color can be changed by using mouse or keyboard also it can be changed programmatically with the help of setCurrentColor method In order to do this we use currentColorChanged method with the QColorDialog object
Syntax : dialog.currentColorChanged.connect(lambda : print(“Color Changed”)) Argument : It takes method as argument Action Performed : It calls the passed method
Below is the implementation
Python3
# 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 a QColorDialog object dialog = QColorDialog( self ) # getting color changed signal # when signal receives print the message dialog.currentColorChanged.connect( lambda : print ("Color Changed")) # setting current color dialog.setCurrentColor(Qt.red) # executing the dialog dialog.exec_() # creating label label = QLabel("w3wiki", self ) # setting geometry to the label label.setGeometry( 100 , 100 , 300 , 80 ) # making label multi line label.setWordWrap( True ) # setting stylesheet of the label label.setStyleSheet("QLabel" "{" "border : 5px solid black;" "}") color = Qt.darkBlue # setting graphic effect to the label graphic = QGraphicsColorizeEffect( self ) # setting color to the graphic graphic.setColor(color) # setting graphic to the label label.setGraphicsEffect(graphic) # create pyqt5 app App = QApplication(sys.argv) # create the instance of our Window window = Window() # start the app sys.exit(App. exec ()) |
Output :
Color Changed Color Changed Color Changed Color Changed