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
# 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("GeeksforGeeks", 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 ())
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Output :
Color Changed Color Changed Color Changed Color Changed