在 PyQt 中打开第二个窗口

2022-01-15 00:00:00 python pyqt dialog

问题描述

我正在尝试使用 pyqt 在单击 QMainWindow 上的按钮时显示自定义 QDialog 窗口.我不断收到以下错误:

I'm trying to use pyqt to show a custom QDialog window when a button on a QMainWindow is clicked. I keep getting the following error: 

$ python main.py 
DEBUG: Launch edit window
Traceback (most recent call last):
  File "/home/james/Dropbox/Database/qt/ui_med.py", line 23, in launchEditWindow
    dialog = Ui_Dialog(c)
  File "/home/james/Dropbox/Database/qt/ui_edit.py", line 15, in __init__
    QtGui.QDialog.__init__(self)
TypeError: descriptor '__init__' requires a 'sip.simplewrapper' object but received a 'Ui_Dialog'

我已经阅读了几个在线教程，但其中大多数都没有展示如何使用非内置对话窗口.我使用 pyuic4 为主窗口和对话框生成了代码.我认为应该是相关代码如下.我在这里错过了什么?

I've gone over several online tutorials, but most of them stop just short of showing how to use a non built-in dialog window. I generated the code for both the main window and the dialog using pyuic4. What I think should be the relevant code is below. What am I missing here?

class Ui_Dialog(object):
    def __init__(self, dbConnection):
        QtGui.QDialog.__init__(self)
        global c
        c = dbConnection

class Ui_MainWindow(object):
    def __init__(self, dbConnection):
        global c
        c = dbConnection

    def launchEditWindow(self):
        print "DEBUG: Launch edit window"
        dialog = QtGui.QDialog()
        dialogui = Ui_Dialog(c)
        dialogui = setupUi(dialog)
        dialogui.show()

class StartQT4(QtGui.QMainWindow):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        conn = sqlite3.connect('meds.sqlite')
        c = conn.cursor()
        self.ui = Ui_MainWindow(c)
        self.ui.setupUi(self)

def main():
    app = QtGui.QApplication(sys.argv)
    program = StartQT4()
    program.show()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

额外的问题:因为看起来你不能在 pyqt 函数回调中传递参数，所以将一些本来可以作为参数传递的东西(名称不佳的c")设置为全局，这是获取信息的最佳方式那些功能?

Bonus question: since it looks like you can't pass arguments in pyqt function callbacks, is setting something which would otherwise be passed as an argument (the poorly named "c") to be global the best way to get information into those functions?

解决方案

我过去做过这样的事情，我可以说它有效.假设您的按钮被称为按钮"

I've done like this in the past, and i can tell it works. assuming your button is called "Button"

class Main(QtGui.QMainWindow):
    ''' some stuff '''
    def on_Button_clicked(self, checked=None):
        if checked==None: return
        dialog = QDialog()
        dialog.ui = Ui_MyDialog()
        dialog.ui.setupUi(dialog)
        dialog.setAttribute(QtCore.Qt.WA_DeleteOnClose)
        dialog.exec_()

这适用于我的应用程序，我相信它也应该适用于您的应用程序.希望它会有所帮助，应该非常直接地进行一些更改以将其应用于您的案例.祝大家有个美好的一天.

This works for my application, and I believe it should work with yours as well. hope it'll help, it should be pretty straight forward to do the few changes needed to apply it to your case. have a good day everybody.

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