pyqt 多窗口之间的相互调用方法
*在编程开发中，一个程序不可避免的需要多窗口操作来实现具体的功能。
实现此功能的基本步骤（以三个窗口为例，使用主窗口调用其它两个窗口）
#主窗口
fromPyQt5importQtCore,QtGui,QtWidgets
classUi_MainWindow(object):
defsetupUi(self,MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800,600)
self.centralwidget=QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton=QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(70,180,75,23))
self.pushButton.setObjectName("pushButton")
self.pushButton_2=QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setGeometry(QtCore.QRect(250,180,75,23))
self.pushButton_2.setObjectName("pushButton_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar=QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0,0,800,23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar=QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
defretranslateUi(self,MainWindow):
_translate=QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow","MainWindow"))
self.pushButton.setText(_translate("MainWindow","打开窗口1"))
self.pushButton_2.setText(_translate("MainWindow","打开窗口2"))
#窗口1
classUi_Dialog(object):
defsetupUi(self,Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400,300)
self.buttonBox=QtWidgets.QDialogButtonBox(Dialog)
self.buttonBox.setGeometry(QtCore.QRect(30,240,341,32))
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
self.buttonBox.setObjectName("buttonBox")
self.label=QtWidgets.QLabel(Dialog)
self.label.setGeometry(QtCore.QRect(140,100,54,12))
self.label.setObjectName("label")
self.retranslateUi(Dialog)
self.buttonBox.accepted.connect(Dialog.accept)
self.buttonBox.rejected.connect(Dialog.reject)
QtCore.QMetaObject.connectSlotsByName(Dialog)
defretranslateUi(self,Dialog):
_translate=QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog","Dialog"))
self.label.setText(_translate("Dialog","这是窗口1"))
#窗口2
classUi_Form(object):
defsetupUi(self,Form):
Form.setObjectName("Form")
Form.resize(400,300)
self.label=QtWidgets.QLabel(Form)
self.label.setGeometry(QtCore.QRect(140,140,54,12))
self.label.setObjectName("label")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
defretranslateUi(self,Form):
_translate=QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form","Form"))
self.label.setText(_translate("Form","这是窗口2"))
主程序入口：
#主程序 classMainWindow(QMainWindow,untitled.Ui_MainWindow): def__init__(self): super(MainWindow,self).__init__() self.setupUi(self) self.window2=Ui_Dialog() self.window2.setupUi() self.window3=Ui_Form() self.window3.setupUi() self.pushButton.clicked.connect(self.window2.show)#绑定窗口2 self.pushButton_2.clicked.connect(self.window3.show)#绑定窗口3 if__name__=='__main__': app=QApplication(sys.argv) MainWindow=MainWindow() MainWindow.show() sys.exit(app.exec_())
以上实现主窗口通过按钮弹出窗口1和窗口2
下面实现通过窗口按钮打开文件资源管理器，实现获取文件相关信息的功能：
1.在主窗口中添加一个按钮：
classUi_MainWindow(object):
defsetupUi(self,MainWindow):
......
self.pushButton_3=QtWidgets.QPushButton(self.centralwidget)
self.pushButton_3.setGeometry(QtCore.QRect(420,180,75,23))
self.pushButton_3.setObjectName("pushButton_3")
defretranslateUi(self,MainWindow):
......
self.pushButton_3.setText(_translate("MainWindow","打开目录"))
2.主程序中添加：
#主程序 classMainWindow(QMainWindow,untitled.Ui_MainWindow): def__init__(self): super(MainWindow,self).__init__() self.setupUi(self) self.window2=Ui_Dialog() self.Window2.setupUi() self.window3=Ui_Form() self.Window3.setupUi() self.pushButton.clicked.connect(self.window2.show)#绑定窗口2 self.pushButton_2.clicked.connect(self.window3.show)#绑定窗口3 self.pushButton_3.clicked.connect(self.gefilename)#新增加的 #新增加的 defgefilename(self): filename=QFileDialog.getOpenFileName() returnfilename if__name__=='__main__': app=QApplication(sys.argv) MainWindow=MainWindow() MainWindow.show() sys.exit(app.exec_())
即可完成上述功能。
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