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Thread: PyQt5 button click not work in imported class

  1. #1
    Join Date
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    Default PyQt5 button click not work in imported class

    In file index.py this line works fine, but in imported class similar line won't work! I can't understand why. Here is code:

    index.py

    import sys
    from PyQt5 import uic
    from PyQt5.QtWidgets import QMainWindow, QApplication

    class MainWindow(QMainWindow):
    def __init__(self):
    super().__init__()

    # Set up the MainWindow from Designer.
    uic.loadUi("mw.ui", self)

    # Connect up the buttons.
    self.pushButton.clicked.connect(self.BtnClck)

    self.show()

    def BtnClck(self):
    # Set up the ContentWindow from Designer.
    from form1 import form1
    form1(self.mn_general)
    self.mn_general.pushButton_2.clicked.connect(form1 .BtnClck1) #this works fine

    if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = MainWindow()
    sys.exit(app.exec_())

    form1.py

    from PyQt5 import uic

    class form1:
    def __init__(self, obj):
    super().__init__()
    uic.loadUi("form1.ui", obj)

    obj.pushButton.setText('TextChanged on init') #this works fine
    obj.pushButton.clicked.connect(self.BtnClck1) #this NOT works
    obj.pushButton.click() #this make previous line works fine!

    def BtnClck1(self):
    print('SecondWindowPrint')

  2. #2
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    Default Re: PyQt5 button click not work in imported class

    What doesn't work about it?
    Invalid syntax, error message printed at run time, no message when clicked...?

    Please use [code]...[/code] tags around code.

  3. #3
    Join Date
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    Default Re: PyQt5 button click not work in imported class

    Then i click pushButton by mice, it not work, no BtnClck1 method is called and no print-SecondWindowPrint.

    But if i call PushButton click programmatically, it works fine.

    And PushButton works fine if i make connect from index.py

    Here is full code on GitHub github.com/m0x3/test1

  4. #4
    Join Date
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    Default Re: PyQt5 button click not work in imported class

    Right answer is put instance of form1 class in a public variable in MainWindow class.
    Need change BtnClck function in Index.py like this:

    Qt Code:
    1. def BtnClck(self):
    2. # Set up the ContentWindow from Designer.
    3. from form1 import form1
    4. self.Form=form1(self.mn_general)
    5. self.mn_general.pushButton_2.clicked.connect(form1.BtnClck1) #this works fine
    To copy to clipboard, switch view to plain text mode 

    Really thanks to Saj Haz from StackOverflow

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