[英]Switching between windows PyQt designer
I have been trying to develop a software in PyQt5.我一直在尝试在 PyQt5 中开发软件。
I have 3 windows: 1) login 2) dashboard 3) appointments我有 3 个 windows:1)登录 2)仪表板 3)约会
Now I can navigate properly from login -> dashboard -> appointments perfectly.现在我可以完美地从登录 -> 仪表板 -> 约会中正确导航。 But when I press pushbutton for back from appointments, it doesn't come back to dashboard.
但是,当我按下约会返回按钮时,它不会返回到仪表板。
But if I go from dashboard->appointments, the pushbutton works for 1 time.但是,如果我从仪表板->约会中 go,则按钮可以工作 1 次。
I have removed irrelevant lines from the code to make analysis simpler.我已经从代码中删除了不相关的行,以使分析更简单。
login window class:登录 window class:
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
self.MainWindow = MainWindow
def retranslateUi(self, MainWindow):
self.pushButton.clicked.connect(self.next)
def next(self):
ui = Ui_MainWindow2()
ui.setupUi(self.MainWindow)
self.MainWindow.show()
dashboard window class:仪表板 window class:
class Ui_MainWindow2(object):
def setupUi(self, MainWindow):
self.MainWindow = MainWindow
def retranslateUi(self, MainWindow):
self.pushButton.clicked.connect(self.next)
def next(self):
ui = Ui_MainWindow3()
ui.setupUi(self.MainWindow)
self.MainWindow.show()
appointment window class:预约 window class:
class Ui_MainWindow3(object):
def setupUi(self, MainWindow):
self.MainWindow = MainWindow
def retranslateUi(self, MainWindow):
self.pushButton.clicked.connect(self.back)
def back(self):
ui = Ui_MainWindow2()
ui.setupUi(self.MainWindow)
self.MainWindow.show()
Application starts from file login.py which has:应用程序从文件 login.py 开始,该文件具有:
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
The forward navigation always work, the backward one keeps failing...向前导航总是有效,向后导航总是失败......
Any help or suggestions will be very welcome...任何帮助或建议都将非常受欢迎......
Turns out I was writing the next or back function slightly differently than it should have been.原来我写的下一个或后面的 function 与应该写的略有不同。 The next and back functions should have been like this:
next 和 back 函数应该是这样的:
def next(self):
self.window = QtWidgets.QMainWindow()
self.ui = Ui_MainWindow2()
self.ui.setupUi(self.window)
self.oldWindow.hide()
self.window.show()
where self.oldWindow is the reference to the original window of the class enclosing the function next.其中 self.oldWindow 是对包含 function 的 class 的原始 window 的引用。 This is also same for the back function.
背面 function 也是如此。
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