問題描述

我需要知道如何在用戶單擊按鈕時彈出對話框.

I need to know how to be able to make a dialog pop-up when a user clicks a button.

我對 Python 和 PyQt/QtDesigner 都比較陌生.我只在其中使用了大約一個月，但我認為我掌握得很好.

I'm relatively new to both Python and PyQt/QtDesigner. I've only been using in them for about a month, but I think I have a good grasp.

這是我所擁有的:我在 QtDesigner 中設計的主對話框(它是應用程序的主要部分).我使用 pyuic4easy 將 .ui 轉換為 .py.

Here's what I have: A main dialog (which is the main part of the application), which I designed in QtDesigner. I converted the .ui to .py using pyuic4easy.

這就是我想要做的:在 QtDesigner 中設計一個新對話框，并以某種方式使其在用戶單擊第一個(主)對話框上的按鈕時彈出.

Here's what I want to do: design a new dialog box in the QtDesigner and somehow make it pop up when a user clicks a button on the first (main) dialog.

這是我的主對話框的代碼:

Here's the code for my main dialog:

import sys
from PyQt4.QtCore import *
from loginScreen import *


class MyForm(QtGui.QDialog):

    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)
        QtCore.QObject.connect(self.ui.pushButton, QtCore.SIGNAL('clicked()'), self.popup)     
        ...

        ... Some functions ...

   def popup(self):
        #Pop-up the new dialog

if __name__ == "__main__":
   app = QtGui.QApplication(sys.argv)
   myapp= MyForm()
   myapp.show()
   sys.exit(app.exec_())

如您所見，我已將第一個按鈕連接到一個名為popup"的方法，該方法需要填寫代碼以使我的第二個窗口彈出.我該怎么做呢?請記住，我已經在 QtDesigner 中設計了第二個對話框，我不需要創建新的.

So as you can see, I've connected the first button to a method named 'popup', which needs to be filled in with code to make my second window pop up. How do I go about doing this? Remember that I already have designed my second dialog in QtDesigner, and I don't need to create a new one.

感謝大家的幫助！

推薦答案

如您所見，我已將第一個按鈕連接到名為'popup'，需要填寫代碼才能使我的第二個彈出窗口.我該怎么做?

So as you can see, I've connected the first button to a method named 'popup', which needs to be filled in with code to make my second window pop up. How do I go about doing this?

與主窗口 (MyForm) 的操作方式幾乎相同.

Pretty much the same way you do it for your main window (MyForm).

像往常一樣，您為第二個對話框的 QtDesigner 代碼編寫一個包裝類(就像您對 MyForm 所做的那樣).我們稱之為MyPopupDialog.然后在您的 popup 方法中，您創建一個實例，然后使用 exec_() 或 show() 顯示您的實例，具體取決于您是否想要模態或非模態對話框.(如果不熟悉 Modal/Modeless 的概念，可以參考 文檔.)

As usual, you write a wrapper class for your QtDesigner code for the second dialog (like you did with MyForm). Let's call it MyPopupDialog. Then in your popup method, you create an instance and then show your instance with either exec_() or show() depending whether you want a modal or modeless dialog. (If you are not familiar with Modal/Modeless concept, you might refer to the documentation.)

所以整體可能看起來像這樣(有一些修改):

So the overall thing might look like this (with a couple of modifications):

# Necessary imports

class MyPopupDialog(QtGui.QDialog):
    def __init__(self, parent=None):
        # Regular init stuff...
        # and other things you might want


class MyForm(QtGui.QDialog):
    def __init__(self, parent=None):
        # Here, you should call the inherited class' init, which is QDialog
        QtGui.QDialog.__init__(self, parent)

        # Usual setup stuff
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)

        # Use new style signal/slots
        self.ui.pushButton.clicked.connect(self.popup)     

        # Other things...

   def popup(self):
        self.dialog = MyPopupDialog()

        # For Modal dialogs
        self.dialog.exec_()

        # Or for modeless dialogs
        # self.dialog.show()

if __name__ == "__main__":
   app = QtGui.QApplication(sys.argv)
   myapp= MyForm()
   myapp.show()
   sys.exit(app.exec_())

這篇關于在 Python (PyQt4) 中顯示彈出窗口的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！