在 PyQt4 中单击主屏幕上的按钮后如何打开子窗口

问题描述

我正在尝试制作一个简单的转换器.我使用了 PyQt4 设计来制作 Gui我想知道点击单个按钮后如何启动一个新窗口.

HI I am trying to make a simple converter.I have used PyQt4 designed to make the GuiI want to know how launch a new window after I click on the individual button.

这是我使用 PyQt4 Designer 创建的界面.这是图片链接:

This is the interface I have created using PyQt4 Designer.Here is the Image link :

我想在我点击货币按钮时启动这个窗口.这是图片链接:

and I want to launch this windows when I click on currency button.Here is the Image Link:

这是我的 ma​​in.py

from PyQt4 import QtGui
from main_screen import mainscreen

def main():
    import sys
    qApp = QtGui.QApplication(sys.argv)
    aw = mainscreen()
    aw.show()
    sys.exit(qApp.exec_())

if __name__ == '__main__':
    main()

和 ma​​inscreen.py

from PyQt4 import QtCore, QtGui
from window_main import Ui_MainWindow

class mainscreen(QtGui.QMainWindow, Ui_MainWindow):
        def __init__(self, parent=None):
                super(mainscreen,self).__init__(parent)
                self.ui = Ui_MainWindow()
                self.ui.setupUi(self)

点击货币按钮后如何打开新窗口(货币按钮的对象名称为currency_bt")我必须在同一窗口中编写货币代码还是必须在新窗口中编写.我该怎么做.

How can I open new window after I click on currency button (object name for currency button is "currency_bt")and do I have to write the code for currency in same window or I have to write in new window.How do I do it.

我是 Python Gui 编程的新手.

I am new to Python Gui programming.

推荐答案

您在 Qt Designer 中创建的每个 GUI 表单都需要使用 pyuic 转换为 Python 模块.因此，首先，您需要对 currency.ui 执行与对 window_main 执行的操作相同的操作.

Each GUI form that you create in Qt Designer needs to be converted into a python module using pyuic. So, to start with, you need to do the same for currency.ui that you did for window_main.

现在您可以将货币窗口类导入mainscreen.py，并将按钮连接到处理程序以便您可以显示它.

Now you can import your currency window class into mainscreen.py, and connect a button to handler so you can display it.

代码看起来像这样:

from PyQt4 import QtCore, QtGui
from window_main import Ui_MainWindow
from currency import Ui_CurrencyWindow

class CurrencyWindow(QtGui.QMainWindow, Ui_CurrencyWindow):
    def __init__(self, parent=None):
        super(CurrencyWindow, self).__init__(parent)
        self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
        self.setupUi(self)

class MainScreen(QtGui.QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(MainScreen, self).__init__(parent)
        self.setupUi(self)
        self.currencyButton.clicked.connect(self.handleCurrencyButton)

    def handleCurrencyButton(self):
        window = CurrencyWindow(self)
        window.show()

看过这个示例代码后，你可能会想到你最终会导入很多的模块，并且有很多的锅炉——为每个人编写板代码(这不是很有趣).

After looking at this example code, it will probably occur to you that you are going to end up importing a lot of modules, and have a lot of boiler-plate code to write for each one of them (which is not much fun).

因此，我建议您考虑更改 GUI 设计，以便您拥有一个包含 tabwidget 的主窗口，然后为每个转换器创建一个单独的选项卡.这不仅会使您的应用程序更容易编写，而且还应该使它更好用.

So I would advise you to consider changing your GUI design, so that you have one main window containing a tabwidget, and then have a separate tab for each of your converters. This will not only make your application much easier to write, but it should also make it a lot nicer to use.

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