create widget in python automatic

January 10, 2022

I want send a newly and dynamically created widget directly into a specifique container QWidget by clicking on QPushButton. I tried some things but to no avail, it doesnt work.

def __init__(self):
        QMainWindow.__init__(self)
        self.resize(600, 500)
        self.wd = wd= QWidget(self)
        
        wd.resize(300,150)
        wd.move(10, 100) 

        bt = QPushButton('Create a button', self)
        bt.clicked.connect(self.creat_textLabel)
        bt.resize(100,30)
        bt.move(0, 0)        
    
    def creat_textLabel(self):
        lbl = QLabel('user new', self)
        lbl.move(0, 0)
        lbl.show

>Solution :

(1) – I added some imports

import sys
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QLabel, QWidget
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtCore import QSize

(2) – Added this also, create the and call the main class of your app…

class MainWindow(QMainWindow):

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    mainWin = MainWindow()
    mainWin.show()
    sys.exit( app.exec_() )

(3) – i repositioned your contenair, so that it doesn’t mixing with the new label to be created in position (move(0,0))

wd.move(10, 100)

(4) – I added some colors to help in identifying widgets…

wd.setStyleSheet('background:red;')
lbl.setStyleSheet('background:blue; color:white;')

(5) – The key point is here

lbl = QLabel('user new', self) #doing this create & positionne QLabel in self == myApp

lbl = QLabel('user new', self.wd)  #I suggest this

Finally, below ==> The full fixed working code!

#!/usr/bin/env python
#coding: utf-8

import sys
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QLabel, QWidget
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtCore import QSize   

class MainWindow(QMainWindow):
    def __init__(self):
        QMainWindow.__init__(self)
        self.resize(600, 500)
        self.wd = wd= QWidget(self)
        wd.setStyleSheet('background:red;')
        wd.resize(300,150)
        wd.move(10, 100) 
        
        bt = QPushButton('Create a button', self)
        bt.clicked.connect(self.creat_textLabel)
        bt.resize(100,30)
        bt.move(100, 250)        
    
    def creat_textLabel(self):
        lbl = QLabel('user new', self.wd)
        lbl.setStyleSheet('background:blue; color:white;')
        lbl.move(0, 0)
        lbl.show()
        
if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    mainWin = MainWindow()
    mainWin.show()
    sys.exit( app.exec_() )