如何将对话框按钮链接到主窗口函数，并使关闭事件与函数分离

Question

我要做的是从主窗口菜单打开一个对话框，在这个对话框中，有一些输入，要么是linetextedit，要么是spinbox，或者是组合框。。。有一个按钮可以关闭对话框并将数据传递到主窗口。在主窗口中，执行一些操作。在我做的例子中，操作是将对话框中的两个数字相加显示在主窗口中，将一个txt文件写入本地磁盘并使用QDesktopServices打开该文件。在

即使不优雅，我做了这个工作，但我发现在对话框中，添加和显示以及打开的外部文件仍然执行，即使我使用右上角的“x”关闭对话框。我只想将函数链接到按钮，而不是关闭事件。在

在这里，我粘贴从ui转换过来的py文件和主文件。在

在主窗口UI.py在

from PySide2 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(486, 497)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName("gridLayout")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setObjectName("label")
        self.gridLayout.addWidget(self.label, 0, 0, 1, 1)
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setObjectName("lineEdit")
        self.gridLayout.addWidget(self.lineEdit, 0, 1, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 486, 22))
        self.menubar.setObjectName("menubar")
        self.menuFile = QtWidgets.QMenu(self.menubar)
        self.menuFile.setObjectName("menuFile")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.actionOpenLocal = QtWidgets.QAction(MainWindow)
        self.actionOpenLocal.setObjectName("actionOpenLocal")
        self.menuFile.addAction(self.actionOpenLocal)
        self.menubar.addAction(self.menuFile.menuAction())

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(QtWidgets.QApplication.translate("MainWindow", "MainWindow", None, -1))
        self.label.setText(QtWidgets.QApplication.translate("MainWindow", "Summation", None, -1))
        self.menuFile.setTitle(QtWidgets.QApplication.translate("MainWindow", "File", None, -1))
        self.actionOpenLocal.setText(QtWidgets.QApplication.translate("MainWindow", "OpenLocal", None, -1))

在对话框ui.py在

^{pr2}$

以及主.py在

import sys
import os

from PySide2 import QtCore, QtGui, QtWidgets
from mainwindowui import Ui_MainWindow
from dialogui import Ui_Dialog


class fileDialog(QtWidgets.QDialog,Ui_Dialog):
    def __init__(self,parent):
        super().__init__(parent)
        self.setupUi(self)
        self.setWindowTitle("Open File")
        QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.close)


class MainWindow(QtWidgets.QMainWindow,Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
        self.actionOpenLocal.triggered.connect(self.startDialog)
        self.show()

    def startDialog(self):
        dlg = fileDialog(self)
        dlg.exec_()
        dlg.pushButton.clicked.connect(self.getDialogInfo(dlg))


    def getDialogInfo(self,dialogue):
        self.avalue = float(dialogue.alineEdit.text())
        self.bvalue = float(dialogue.blineEdit.text())
        sum = str(self.avalue+self.bvalue)
        self.lineEdit.setText(sum)
        file = open("result.txt","w")
        file.write(sum)
        file.close()

        QtGui.QDesktopServices.openUrl(QtCore.QUrl.fromLocalFile(currentdir +"/result.txt"))


if __name__=='__main__':
    app = QtWidgets.QApplication(sys.argv)
    currentdir = os.getcwd()
    mainWin = MainWindow()
    ret = app.exec_()
    sys.exit(ret)

另外，如果有人能纠正不太标准的部分，我也很感激。在

Answer 1

你可以使用信号和插槽。在

import sys
import os

from PySide2 import QtCore, QtGui, QtWidgets
from mainwindowui import Ui_MainWindow
from dialogui import Ui_Dialog


class fileDialog(QtWidgets.QDialog,Ui_Dialog):
    sig_complete = QtCore.Signal(dict)
    def __init__(self,parent):
        super().__init__(parent)
        self.setupUi(self)
        self.setWindowTitle("Open File")
        QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.slt_save)

    def slt_save(self):
        self.sig_complete.emit({"aline": self.alineEdit.text(), "bline": self.blineEdit.text()})
        self.close()

class MainWindow(QtWidgets.QMainWindow,Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
        self.actionOpenLocal.triggered.connect(self.startDialog)
        self.show()

    def startDialog(self):
        dlg = fileDialog(self)
        dlg.sig_complete.connect(self.getDialogInfo)
        dlg.exec_()

    def getDialogInfo(self,data_dict):
        self.avalue = float(data_dict["aline"])
        self.bvalue = float(data_dict["bline"])
        sum = str(self.avalue+self.bvalue)
        self.lineEdit.setText(sum)
        file = open("result.txt","w")
        file.write(sum)
        file.close()
        QtGui.QDesktopServices.openUrl(QtCore.QUrl.fromLocalFile(currentdir +"/result.txt"))


if __name__=='__main__':
    app = QtWidgets.QApplication(sys.argv)
    currentdir = os.getcwd()
    mainWin = MainWindow()
    ret = app.exec_()
    sys.exit(ret)