我有一个主窗口,通过按按钮可以打开对话框。我想覆盖对话框的接受功能,因此我可以实现一些自定义功能,这些功能应在接受对话框之前执行。这是我的主窗口的示例代码。
from PySide2 import QtCore, QtGui, QtWidgets
from add_new import Add_new_dialog
import sys
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(500, 100)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushNew_Bed = QtWidgets.QPushButton(self.centralwidget)
self.pushNew_Bed.setObjectName("pushNew_Bed")
self.pushNew_Bed.resize(QtCore.QSize(500,100))
self.pushNew_Bed.clicked.connect(self.on_add_new_clicked)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushNew_Bed.setText(_translate("MainWindow", "Add New Bed"))
def on_add_new_clicked(self):
Dialog = QtWidgets.QDialog()
Dialog.ui = Add_new_dialog()
Dialog.ui.setupUi(Dialog)
#dialog.setAttribute(QtCore.Qt.WA_DeleteOnClose)
retValue = Dialog.exec_()
if retValue == 1:
print("Accepted")#dialog.calendarWidget.selectedDate())
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
这是对话框。
from PySide2 import QtCore, QtGui, QtWidgets
import sys
class Add_new_dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 300)
Dialog.setMinimumSize(QtCore.QSize(400, 300))
Dialog.setMaximumSize(QtCore.QSize(400, 300))
self.buttonBox = QtWidgets.QDialogButtonBox(Dialog)
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
self.buttonBox.setObjectName("buttonBox")
self.retranslateUi(Dialog)
#self.buttonBox.accepted.connect(Dialog.accept)
self.buttonBox.accepted.connect(self.custom_func)
self.buttonBox.rejected.connect(Dialog.reject)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
def custom_func(self):
Dialog.accept()
print("custom func")
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Add_new_dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())
如果我独立启动该对话框,则一切正常。但是,如果我从主窗口要求它,我可以预料地会出错。
Dialog.accept()
NameError: name 'Dialog' is not defined
我尝试将以下代码添加到对话框中以覆盖accept函数:
def accept(self):
self.custom_func()
Dialog.done(QtWidgets.QDialog.Accepted)
并将按钮绑定到该功能
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.rejected.connect(Dialog.reject)
再次,可以预期的是,我得到了相同的结果。阅读文档并没有太大帮助。非常感谢您的帮助,对于这个愚蠢的问题,我深表歉意,但是我是gui的完整初学者。预先谢谢你。
您不应该修改Qt Designer生成的类,因此必须重新生成.py(有关更多信息,请阅读here),因此我将假定类Ui_MainWindow
和Add_new_dialog
属于文件mainwindow_ui.py
和分别为add_new_dialog_ui.py
。
考虑到上述,您应该重写继承QDialog的类的方法:
main.py
from PySide2 import QtCore, QtGui, QtWidgets
from mainwindow_ui import Ui_MainWindow
from add_new_dialog_ui import Add_new_dialog
class AddDialog(QtWidgets.QDialog, Add_new_dialog):
def __init__(self, parent=None):
super().__init__(parent)
self.setupUi(self)
def accept(self):
print("custom func")
super().accept()
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.setupUi(self)
self.pushNew_Bed.clicked.connect(self.on_add_new_clicked)
def on_add_new_clicked(self):
dialog = AddDialog()
retValue = dialog.exec_()
if retValue == QtWidgets.QDialog.Accepted:
print("Accepted")
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())