如何 link 对话框按钮到主 window 函数,以及如何将关闭事件与函数分开
How to link the dialog button to main window function and also make close event separate from the function
我想做的是从主窗口菜单打开一个对话框,在该对话框中,有一些输入,linetextedit 或 spinbox,或组合框...还有一个按钮可以关闭对话框并将数据传递给主窗口。在主窗口中,进行了一些操作。在我做的例子中,操作是将对话框中的两个数字加在一起显示在主窗口中,将一个 txt 文件写入本地磁盘并使用 QDesktopServices 打开该文件。
即使不优雅,我也做了这个工作,但我发现 在对话框中,即使我使用 [=31= 关闭对话框,添加和显示以及打开的外部文件仍然执行]右上角。我只想 link 按钮的功能而不是关闭事件。
这里我粘贴了ui和主文件中转换后的py文件。
mainwindowui.py
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))
dialogui.py
from PySide2 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(320, 237)
self.gridLayout = QtWidgets.QGridLayout(Dialog)
self.gridLayout.setObjectName("gridLayout")
self.labelA = QtWidgets.QLabel(Dialog)
self.labelA.setObjectName("labelA")
self.gridLayout.addWidget(self.labelA, 0, 0, 1, 1)
self.alineEdit = QtWidgets.QLineEdit(Dialog)
self.alineEdit.setObjectName("alineEdit")
self.gridLayout.addWidget(self.alineEdit, 0, 1, 1, 1)
self.labelB = QtWidgets.QLabel(Dialog)
self.labelB.setObjectName("labelB")
self.gridLayout.addWidget(self.labelB, 1, 0, 1, 1)
self.blineEdit = QtWidgets.QLineEdit(Dialog)
self.blineEdit.setObjectName("blineEdit")
self.gridLayout.addWidget(self.blineEdit, 1, 1, 1, 1)
self.pushButton = QtWidgets.QPushButton(Dialog)
self.pushButton.setObjectName("pushButton")
self.gridLayout.addWidget(self.pushButton, 2, 0, 1, 2)
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
Dialog.setWindowTitle(QtWidgets.QApplication.translate("Dialog", "Dialog", None, -1))
self.labelA.setText(QtWidgets.QApplication.translate("Dialog", "inputA", None, -1))
self.labelB.setText(QtWidgets.QApplication.translate("Dialog", "inputB", None, -1))
self.pushButton.setText(QtWidgets.QApplication.translate("Dialog", "OpenPdf", None, -1))
和main.py
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,如果有人能指正那些看起来不太标准的部分,我也很感激。
您的代码有几个错误:
行dlg.pushButton.clicked.connect(self.getDialogInfo(dlg))
没有意义,我们分析一下,什么结果有self.getDialogInfo(dlg)
,函数getDialogInfo
执行了一个任务但没有return 等于 return 和 None
的任何值,因此初始代码等于 dlg.pushButton.clicked.connect(None)
,它可以完成您想要的任务,但不需要连接。
对话框 return 是您调用 exec_()
时的代码,它用于区分任务是否被接受,因为这是对话框的任务。只有当您调用关闭 window 的 accept()
或 reject()
方法时,该代码才会被 returned,因此您必须调用 [=而不是按钮调用 close()
=17=],因此当您使用 X 按钮关闭 window 时,它会在内部调用 reject()
,因此您可以区分每个按钮。
不要使用 sum,因为它是一个函数名,它被认为是一个保留字,这样做以后可能会出现问题。
使用 with 打开文件,因为它会在文件退出时自动关闭文件。
不要手动拼接路径,拼接依赖平台,最好使用库提供的函数os
.
使用新的连接语法,可读性更好
综合以上,得到如下解法:
import os
import sys
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")
self.pushButton.clicked.connect(self.accept)
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)
if dlg.exec_() == QtWidgets.QDialog.Accepted:
self.getDialogInfo(dlg)
def getDialogInfo(self, dialogue):
self.avalue = float(dialogue.alineEdit.text())
self.bvalue = float(dialogue.blineEdit.text())
res = str(self.avalue+self.bvalue)
self.lineEdit.setText(res)
with open("result.txt","w") as file:
file.write(res)
QtGui.QDesktopServices.openUrl(QtCore.QUrl.fromLocalFile(os.path.join(currentdir,"result.txt")))
if __name__=='__main__':
app = QtWidgets.QApplication(sys.argv)
currentdir = os.getcwd()
mainWin = MainWindow()
ret = app.exec_()
sys.exit(ret)
您可以使用信号和槽。
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)
我想做的是从主窗口菜单打开一个对话框,在该对话框中,有一些输入,linetextedit 或 spinbox,或组合框...还有一个按钮可以关闭对话框并将数据传递给主窗口。在主窗口中,进行了一些操作。在我做的例子中,操作是将对话框中的两个数字加在一起显示在主窗口中,将一个 txt 文件写入本地磁盘并使用 QDesktopServices 打开该文件。
即使不优雅,我也做了这个工作,但我发现 在对话框中,即使我使用 [=31= 关闭对话框,添加和显示以及打开的外部文件仍然执行]右上角。我只想 link 按钮的功能而不是关闭事件。
这里我粘贴了ui和主文件中转换后的py文件。
mainwindowui.py
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))
dialogui.py
from PySide2 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(320, 237)
self.gridLayout = QtWidgets.QGridLayout(Dialog)
self.gridLayout.setObjectName("gridLayout")
self.labelA = QtWidgets.QLabel(Dialog)
self.labelA.setObjectName("labelA")
self.gridLayout.addWidget(self.labelA, 0, 0, 1, 1)
self.alineEdit = QtWidgets.QLineEdit(Dialog)
self.alineEdit.setObjectName("alineEdit")
self.gridLayout.addWidget(self.alineEdit, 0, 1, 1, 1)
self.labelB = QtWidgets.QLabel(Dialog)
self.labelB.setObjectName("labelB")
self.gridLayout.addWidget(self.labelB, 1, 0, 1, 1)
self.blineEdit = QtWidgets.QLineEdit(Dialog)
self.blineEdit.setObjectName("blineEdit")
self.gridLayout.addWidget(self.blineEdit, 1, 1, 1, 1)
self.pushButton = QtWidgets.QPushButton(Dialog)
self.pushButton.setObjectName("pushButton")
self.gridLayout.addWidget(self.pushButton, 2, 0, 1, 2)
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
Dialog.setWindowTitle(QtWidgets.QApplication.translate("Dialog", "Dialog", None, -1))
self.labelA.setText(QtWidgets.QApplication.translate("Dialog", "inputA", None, -1))
self.labelB.setText(QtWidgets.QApplication.translate("Dialog", "inputB", None, -1))
self.pushButton.setText(QtWidgets.QApplication.translate("Dialog", "OpenPdf", None, -1))
和main.py
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,如果有人能指正那些看起来不太标准的部分,我也很感激。
您的代码有几个错误:
行
dlg.pushButton.clicked.connect(self.getDialogInfo(dlg))
没有意义,我们分析一下,什么结果有self.getDialogInfo(dlg)
,函数getDialogInfo
执行了一个任务但没有return 等于 return 和None
的任何值,因此初始代码等于dlg.pushButton.clicked.connect(None)
,它可以完成您想要的任务,但不需要连接。对话框 return 是您调用
exec_()
时的代码,它用于区分任务是否被接受,因为这是对话框的任务。只有当您调用关闭 window 的accept()
或reject()
方法时,该代码才会被 returned,因此您必须调用 [=而不是按钮调用close()
=17=],因此当您使用 X 按钮关闭 window 时,它会在内部调用reject()
,因此您可以区分每个按钮。不要使用 sum,因为它是一个函数名,它被认为是一个保留字,这样做以后可能会出现问题。
使用 with 打开文件,因为它会在文件退出时自动关闭文件。
不要手动拼接路径,拼接依赖平台,最好使用库提供的函数
os
.使用新的连接语法,可读性更好
综合以上,得到如下解法:
import os
import sys
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")
self.pushButton.clicked.connect(self.accept)
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)
if dlg.exec_() == QtWidgets.QDialog.Accepted:
self.getDialogInfo(dlg)
def getDialogInfo(self, dialogue):
self.avalue = float(dialogue.alineEdit.text())
self.bvalue = float(dialogue.blineEdit.text())
res = str(self.avalue+self.bvalue)
self.lineEdit.setText(res)
with open("result.txt","w") as file:
file.write(res)
QtGui.QDesktopServices.openUrl(QtCore.QUrl.fromLocalFile(os.path.join(currentdir,"result.txt")))
if __name__=='__main__':
app = QtWidgets.QApplication(sys.argv)
currentdir = os.getcwd()
mainWin = MainWindow()
ret = app.exec_()
sys.exit(ret)
您可以使用信号和槽。
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)