pyqt5 从 parent window 关闭 child window
pyqt5 closing a child window from a parent window
我使用 qt 设计器创建了 2 个 windows、win1
和 win2
,并添加了两个按钮:btn_open_win2
从 [ 打开 win2
=16=] 和 btn_close
关闭 win2
.
当我 运行 win2
直接 close
方法正常工作但是当我 运行 win1
并从它调用 win2 时, close
win2
上的按钮无法正常运行。
我知道问题出在 if __name__ =='__main__'
部分中定义了 win2,如下面的代码所示,但我无法解决这个问题。
win1:
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
class Ui_Win1(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("Win1")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.btn_open_win2 = QtWidgets.QPushButton(self.centralwidget)
self.btn_open_win2.setGeometry(QtCore.QRect(250, 170, 131, 101))
self.btn_open_win2.setObjectName("btn_open_win2")
self.btn_open_win2.clicked.connect(self.on_open_win2)
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Win1"))
self.btn_open_win2.setText(_translate("MainWindow", "open win2"))
def on_open_win2(self):
from win2 import Ui_Win2
self.win = QMainWindow()
self.ui = Ui_Win2()
self.ui.setupUi(self.win)
self.win.show()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win1 = QMainWindow()
ui = Ui_Win1()
ui.setupUi(win1)
win1.show()
sys.exit(app.exec_())
win2:
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
class Ui_Win2(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("Win2")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.btn_close = QtWidgets.QPushButton(self.centralwidget)
self.btn_close.setGeometry(QtCore.QRect(260, 180, 131, 101))
self.btn_close.setObjectName("btn_close")
self.btn_close.clicked.connect(self.on_close)
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Win2"))
self.btn_close.setText(_translate("MainWindow", "close"))
def on_close(self):
# win2 = QMainWindow()
# ui = Ui_Win2()
# ui.setupUi(win2)
win2.close()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win2 = QMainWindow()
ui = Ui_Win2()
ui.setupUi(win2)
win2.show()
sys.exit(app.exec_())
像这样改变 win2:
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
class Ui_Win2(object):
def setupUi(self, MainWindow):
self.MainWindow = MainWindow
MainWindow.setObjectName("Win2")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.btn_close = QtWidgets.QPushButton(self.centralwidget)
self.btn_close.setGeometry(QtCore.QRect(260, 180, 131, 101))
self.btn_close.setObjectName("btn_close")
self.btn_close.clicked.connect(self.on_close)
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Win2"))
self.btn_close.setText(_translate("MainWindow", "close"))
def on_close(self):
# win2 = QMainWindow()
# ui = Ui_Win2()
# ui.setupUi(win2)
self.MainWindow.close()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win2 = QMainWindow()
ui = Ui_Win2()
ui.setupUi(win2)
win2.show()
sys.exit(app.exec_())
从 self.MainWindow 而不是 self 调用关闭函数。并在 setupUi function
的第一行设置 self.MainWindow
我使用 qt 设计器创建了 2 个 windows、win1
和 win2
,并添加了两个按钮:btn_open_win2
从 [ 打开 win2
=16=] 和 btn_close
关闭 win2
.
当我 运行 win2
直接 close
方法正常工作但是当我 运行 win1
并从它调用 win2 时, close
win2
上的按钮无法正常运行。
我知道问题出在 if __name__ =='__main__'
部分中定义了 win2,如下面的代码所示,但我无法解决这个问题。
win1:
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
class Ui_Win1(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("Win1")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.btn_open_win2 = QtWidgets.QPushButton(self.centralwidget)
self.btn_open_win2.setGeometry(QtCore.QRect(250, 170, 131, 101))
self.btn_open_win2.setObjectName("btn_open_win2")
self.btn_open_win2.clicked.connect(self.on_open_win2)
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Win1"))
self.btn_open_win2.setText(_translate("MainWindow", "open win2"))
def on_open_win2(self):
from win2 import Ui_Win2
self.win = QMainWindow()
self.ui = Ui_Win2()
self.ui.setupUi(self.win)
self.win.show()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win1 = QMainWindow()
ui = Ui_Win1()
ui.setupUi(win1)
win1.show()
sys.exit(app.exec_())
win2:
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
class Ui_Win2(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("Win2")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.btn_close = QtWidgets.QPushButton(self.centralwidget)
self.btn_close.setGeometry(QtCore.QRect(260, 180, 131, 101))
self.btn_close.setObjectName("btn_close")
self.btn_close.clicked.connect(self.on_close)
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Win2"))
self.btn_close.setText(_translate("MainWindow", "close"))
def on_close(self):
# win2 = QMainWindow()
# ui = Ui_Win2()
# ui.setupUi(win2)
win2.close()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win2 = QMainWindow()
ui = Ui_Win2()
ui.setupUi(win2)
win2.show()
sys.exit(app.exec_())
像这样改变 win2:
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
class Ui_Win2(object):
def setupUi(self, MainWindow):
self.MainWindow = MainWindow
MainWindow.setObjectName("Win2")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.btn_close = QtWidgets.QPushButton(self.centralwidget)
self.btn_close.setGeometry(QtCore.QRect(260, 180, 131, 101))
self.btn_close.setObjectName("btn_close")
self.btn_close.clicked.connect(self.on_close)
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Win2"))
self.btn_close.setText(_translate("MainWindow", "close"))
def on_close(self):
# win2 = QMainWindow()
# ui = Ui_Win2()
# ui.setupUi(win2)
self.MainWindow.close()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win2 = QMainWindow()
ui = Ui_Win2()
ui.setupUi(win2)
win2.show()
sys.exit(app.exec_())
从 self.MainWindow 而不是 self 调用关闭函数。并在 setupUi function
的第一行设置 self.MainWindow