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A PyQt5 example of how to switch between multiple windows.
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| import sys | |
| from PyQt5 import QtCore, QtWidgets | |
| class MainWindow(QtWidgets.QWidget): | |
| switch_window = QtCore.pyqtSignal(str) | |
| def __init__(self): | |
| QtWidgets.QWidget.__init__(self) | |
| self.setWindowTitle('Main Window') | |
| layout = QtWidgets.QGridLayout() | |
| self.line_edit = QtWidgets.QLineEdit() | |
| layout.addWidget(self.line_edit) | |
| self.button = QtWidgets.QPushButton('Switch Window') | |
| self.button.clicked.connect(self.switch) | |
| layout.addWidget(self.button) | |
| self.setLayout(layout) | |
| def switch(self): | |
| self.switch_window.emit(self.line_edit.text()) | |
| class WindowTwo(QtWidgets.QWidget): | |
| def __init__(self, text): | |
| QtWidgets.QWidget.__init__(self) | |
| self.setWindowTitle('Window Two') | |
| layout = QtWidgets.QGridLayout() | |
| self.label = QtWidgets.QLabel(text) | |
| layout.addWidget(self.label) | |
| self.button = QtWidgets.QPushButton('Close') | |
| self.button.clicked.connect(self.close) | |
| layout.addWidget(self.button) | |
| self.setLayout(layout) | |
| class Login(QtWidgets.QWidget): | |
| switch_window = QtCore.pyqtSignal() | |
| def __init__(self): | |
| QtWidgets.QWidget.__init__(self) | |
| self.setWindowTitle('Login') | |
| layout = QtWidgets.QGridLayout() | |
| self.button = QtWidgets.QPushButton('Login') | |
| self.button.clicked.connect(self.login) | |
| layout.addWidget(self.button) | |
| self.setLayout(layout) | |
| def login(self): | |
| self.switch_window.emit() | |
| class Controller: | |
| def __init__(self): | |
| pass | |
| def show_login(self): | |
| self.login = Login() | |
| self.login.switch_window.connect(self.show_main) | |
| self.login.show() | |
| def show_main(self): | |
| self.window = MainWindow() | |
| self.window.switch_window.connect(self.show_window_two) | |
| self.login.close() | |
| self.window.show() | |
| def show_window_two(self, text): | |
| self.window_two = WindowTwo(text) | |
| self.window.close() | |
| self.window_two.show() | |
| def main(): | |
| app = QtWidgets.QApplication(sys.argv) | |
| controller = Controller() | |
| controller.show_login() | |
| sys.exit(app.exec_()) | |
| if __name__ == '__main__': | |
| main() |
hello there,
First of all, i want to thank you for such a quick Response I didn't expect such a quick response. I want to say thanks to you for taking out time and reading my code and helping me out a very handful of programmers do that. thanks for the advice that I should not write any code in that instead create a class that inherits from above two class.
Once again I am saying thanks to you
Just curious to know from which country are you from?
You're welcome, I'm glad I could help. I'm from the U.S.
Even I am from United States I reside in Bridgeport
Would love to meet you if you are near by
On Thu, Jun 6, 2019 at 7:49 AM MalloyDelacroix ***@***.***> wrote:
You're welcome, I'm glad I could help. I'm from the U.S.
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Thanking You,
Soumil Nitin Shah
B.E in Electronic
MS Electrical Engineering
MS Computer Engineering
+1-646 204 5957
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There are quite a few problems here. The code, as you posted it, would not run at all for me, so I cannot see exactly where you are getting an error. I changed it in the following way:
As you can see, I have taken the classes generated via the
pyuictool and made other classes that inherit from both QWidget and the auto generated classes. These new classes are the ones where the GUI programming should be done. You should not add additional code to the files generated bypyuicbecause if you were to change your UI with Qt Designer and runpyuicagain, all of the code you added would be overwritten.I have commented out the portions of the generated classes that I believe you added so they do not affect the new classes. The only other change I made here is in the
pyqtSignal. In my example these signals emitted a string, but only to demonstrate how to pass information from one window to another. It appears that you were trying to emit these signals without supplying them with a string. This is the only area I found that caused an error. You did however say that the error occurred when you called thehide()method, but you do not call that method anywhere in the code you posted.