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[Python-de] Re: New overriden and generated QLineEdit class will not

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Dear Mohsen,

You have contacted the German Python mailinglist, so almost all
conversations on here are held in German. If you'd like to communicate
in English, it might be a good idea to contact the general Python
mailinglist, whose main language is English. You can connnect to the
general list under python-list@python.org.

Unfortunately I cannot help you with your Problem, but I am sure there
are people knowing QT in conjunction with Python.

Best Regards

Lars

Am 08.10.21 um 11:14 schrieb Mohsen Owzar:
> Hi all 
> I have a question about a clickable QLineEdit. 
> After searching some Hints, how to use QMouseEvent, I've written a program which is working almost good but with a small or perhaps big ugliness and that is: 
> Below is the imgur link to the screenshots of my program after clicking the buttons in sequence: 
> https://imgur.com/a/rfcP3qB 
> As you will see in the code blow, I override the QlineEdit widget and define a new class " CustomLineEdit " to generate a "clicked" signal, when the user pressed with mouse on this field. 
> I use this "CustomLineEdit" class and place it on the MainWindow with the desired "layout". 
> I couldn't figure out, why this widget is placed not in the MainWindow, but outside this window, as you can see in the top picture of the attached screenshots. 
> When I take the line 12 (self.show()) from the code, the generated class will not appear. 
> The problem here is that at the beginning, the MainWindow with a LineEdit field should appear at the program start. 
> Then, after clicking on this field, the keypad should come up outside the MainWindow. 
> Could anyone see, where my mistake is? 
> Thanks for any help. 
> Mohsen 
> Here is the code: 
> &&&&&&&&&&&&&&&&&&&&&&&&&&& 
> import sys 
> from PyQt5.QtWidgets import (QApplication, QLineEdit, QPushButton, QMainWindow, 
> QVBoxLayout, QHBoxLayout, QGridLayout, QWidget) 
> from PyQt5.QtCore import pyqtSignal, pyqtSlot 
>
> class CustomLineEdit(QLineEdit): 
> clicked = pyqtSignal() 
>
> def __init__(self): 
> super().__init__() 
>
> self.show() 
>
> def mousePressEvent(self, QMouseEvent): 
> self.clicked.emit() 
>
>
> class MainWindow(QMainWindow): 
> def __init__( self, parent=None ): 
> super().__init__(parent) 
>
> self.title = 'Window 1' 
> self.left = 700 
> self.top = 300 
> self.width = 200 
> self.height = 200 
> self.initUI() 
>
> def initUI(self): 
>
> self.keypad_window = Keypad_Window(self) 
>
> hbox = QHBoxLayout() 
>
> self.cle = CustomLineEdit() 
> self.cle.clicked.connect(self.show_keypad_window) 
> self.cle.setFixedSize(220, 60) 
> self.cle.setStyleSheet("color: red;" 
> "background-color: yellow;" 
> "font-family: Arial;" 
> "font-weight: Bold;" 
> "font-size: 30pt") 
>
> hbox.addWidget(self.cle) 
> self.setLayout(hbox) 
>
> self.setWindowTitle(self.title) 
> self.setGeometry(self.left, self.top, self.width, self.height) 
> self.show() 
>
> def show_keypad_window(self): 
> self.keypad_window.show() 
> self.hide() 
>
> def close(self): 
> self.keypad_window.close() 
> super(MainWindow, self).close() 
>
> @pyqtSlot(str) 
> def update_label(self, txt): 
> self.cle.setText(txt) 
>
> class Keypad_Window(QWidget): 
> def __init__(self, parent=None): 
> super().__init__() 
> self.parent = parent 
>
> self.setGeometry(1200, 500, 230, 400) 
>
> vbox = QVBoxLayout() 
> self.display = QLineEdit() 
> self.display.setFixedSize(220, 60) 
> self.display.setReadOnly(True) 
> self.display.setStyleSheet("color: Blue; " 
> "background-color: lightgreen;" 
> "font-family: Arial;" 
> "font-weight: Bold;" 
> "font-size: 18pt") 
> vbox.addWidget(self.display) 
>
> """Create the buttons.""" 
> self.buttons = {} 
> self.gridlay = QGridLayout() 
>
> self.button_name = [['7', '8', '9'], 
> ['4', '5', '6'], 
> ['1', '2', '3'], 
> ['C', '0', '>']] 
>
> self.command_name = [['7', '8', '9'], 
> ['4', '5', '6'], 
> ['1', '2', '3'], 
> ['delete', '0', 'accept']] 
>
> for i in range(4): 
> for j in range(3): 
> text = self.button_name[i][j] 
>
> # keep a reference to the buttons 
> self.buttons[i, j] = QPushButton() 
> self.buttons[i, j].setText(text) 
> self.buttons[i, j].setObjectName(text) 
> self.buttons[i, j].setFixedSize(70, 70) 
> if i == 3: 
> if j == 0: 
> self.buttons[i, j].setToolTip('Each click deletes\na digit to the left') 
>
> if j == 2: 
> self.buttons[i, j].setToolTip('The whole displayed\nvalue will be taken!') 
>
> self.buttons[i, j].clicked.connect(self.call_button_fun(i, j, self.command_name)) 
>
> # add to the GridLayout 
> self.gridlay.addWidget(self.buttons[i, j], i, j) 
> self.buttons[i, j].setStyleSheet("color: blue; " 
> "background-color: cyan;" 
> "font-family: Arial;" 
> "font-weight: Bold;" 
> "font-size: 20pt") 
> vbox.addLayout(self.gridlay) 
> self.setLayout(vbox) 
>
> def call_button_fun(self, i, j, command_name): 
> def button_fun(): 
> if command_name[i][j] == self.button_name[i][j]: 
> displayed_text = self.display.text() 
> self.new_text = displayed_text + self.button_name[i][j] 
> self.display.setText(self.new_text) 
>
> if command_name[i][j] == 'accept': 
> print('>-key pressed!') 
> self.parent.cle.setText(self.new_text) 
> self.close() 
>
> if command_name[i][j] == 'delete': 
> print('C-key pressed!') 
> self.display.setText('') 
>
> return button_fun 
>
> if __name__ == "__main__": 
> app = QApplication(sys.argv) 
> mainwindow = MainWindow() 
>
> # Exception abfangen, wenn sie nicht behandelt wurde 
> sys._excepthook = sys.excepthook 
>
> def exception_hook(exctype, value, traceback): 
> print(exctype, value, traceback) 
> sys._excepthook(exctype, value, traceback) 
> sys.exit(1) 
>
> sys.excepthook = exception_hook 
>
> sys.exit(app.exec_())
> _______________________________________________
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Thread

New overriden and generated QLineEdit class will not be placed on the MainWindow as expected Mohsen Owzar <mohsen.owzar@gmail.com> - 2021-10-08 02:14 -0700
  [Python-de] Re: New overriden and generated QLineEdit class will not Lars Liedtke <liedtke@punkt.de> - 2021-10-08 12:20 +0200
  [Python-de] Re: New overriden and generated QLineEdit class will not Hans-Peter Jansen <hpj@urpla.net> - 2021-10-08 18:02 +0200
    Re: [Python-de] Re: New overriden and generated QLineEdit class will not Mohsen Owzar <mohsen.owzar@gmail.com> - 2021-10-08 21:10 -0700
      [Python-de] Re: New overriden and generated QLineEdit class will Hans-Peter Jansen <hpj@urpla.net> - 2021-10-09 15:10 +0200
        Re: [Python-de] Re: New overriden and generated QLineEdit class will Mohsen Owzar <mohsen.owzar@gmail.com> - 2021-10-09 10:54 -0700
          Re: [Python-de] Re: New overriden and generated QLineEdit class will Mohsen Owzar <mohsen.owzar@gmail.com> - 2021-10-09 11:07 -0700
            [Python-de] Re: New overriden and generated QLineEdit class will Marco Bakera <pintman@bakera.de> - 2021-10-10 09:23 +0200
          [Python-de] Re: New overriden and generated QLineEdit class will Hans-Peter Jansen <hpj@urpla.net> - 2021-10-10 18:39 +0200
            Re: [Python-de] Re: New overriden and generated QLineEdit class will Mohsen Owzar <mohsen.owzar@gmail.com> - 2021-10-10 13:36 -0700
              [Python-de] Re: New overriden and generated QLineEdit class will Hans-Peter Jansen <hpj@urpla.net> - 2021-10-11 12:22 +0200
                Re: [Python-de] Re: New overriden and generated QLineEdit class will Mohsen Owzar <mohsen.owzar@gmail.com> - 2021-10-11 04:47 -0700

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