PyQT实现多窗口切换的方法有哪些?

2019年6月24日09:14:15 发表评论 454 views

PyQT实现多窗口切换的方法有哪些,喜欢Python开发的小伙伴下面就和小编一起来看一下吧。

PyQT实现多窗口切换的方法有哪些?

PyQT实现多窗口切换的方法

最近做个软件,用PyQT写的,在实现菜单栏点击弹出新窗口的时候严重被卡壳,发现用WxPython的思想和方式来做完全无法实现。PyQT的中文资料实在是太少了。看了点英文资料和QT的资料,逆推PyQT的实现方法,总算搞定。下面是一个小demo。

主界面的代码如下所示:

# -*- coding: utf-8 -*-

from PyQt4 import QtCore, QtGui

from dialog1 import Dialog1

from dialog2 import Dialog2

import sys

try:

_fromUtf8 = QtCore.QString.fromUtf8

except AttributeError:

def _fromUtf8(s):

return s

try:

_encoding = QtGui.QApplication.UnicodeUTF8

def _translate(context, text, disambig):

return QtGui.QApplication.translate(context, text, disambig, _encoding)

except AttributeError:

def _translate(context, text, disambig):

return QtGui.QApplication.translate(context, text, disambig)

class MainWindow(QtGui.QWidget):

dialog1_signal = QtCore.pyqtSignal() #定义一个无参数的信号,串口设定与子站初始化信号

dialog2_signal = QtCore.pyqtSignal() #定义一个无参数的信号,串口设定与子站初始化信号

exit_signal = QtCore.pyqtSignal() #定义一个无参数的信号,串口设定与子站初始化信号

def __init__(self):

super(MainWindow,self).__init__()

def setupUi(self, Form):

Form.setObjectName(_fromUtf8("Form"))

Form.resize(400, 300)

self.form = Form

self.pushButton = QtGui.QPushButton(Form)

self.pushButton.setGeometry(QtCore.QRect(70, 90, 75, 23))

self.pushButton.setObjectName(_fromUtf8("pushButton"))

self.pushButton_2 = QtGui.QPushButton(Form)

self.pushButton_2.setGeometry(QtCore.QRect(240, 90, 75, 23))

self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))

self.pushButton_3 = QtGui.QPushButton(Form)

self.pushButton_3.setGeometry(QtCore.QRect(150, 160, 75, 23))

self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))

self.label = QtGui.QLabel(Form)

self.label.setGeometry(QtCore.QRect(170, 40, 54, 16))

self.label.setObjectName(_fromUtf8("label"))

self.retranslateUi(Form)

QtCore.QMetaObject.connectSlotsByName(Form)

#信号连接到指定槽

self.pushButton.clicked.connect(self.on_pushButton_clicked)

self.pushButton_2.clicked.connect(self.on_pushButton_2_clicked)

self.pushButton_3.clicked.connect(self.on_pushButton_3_clicked)

def retranslateUi(self, Form):

Form.setWindowTitle(_translate("Form", "Form", None))

self.pushButton.setText(_translate("Form", "进入dialog1", None))

self.pushButton_2.setText(_translate("Form", "进入dialog2", None))

self.pushButton_3.setText(_translate("Form", "退出", None))

self.label.setText(_translate("Form", "主窗体", None))

def on_pushButton_clicked(self):

self.form.hide()

Form1 = QtGui.QDialog()

ui = Dialog1()

ui.setupUi(Form1)

Form1.show()

Form1.exec_()

self.form.show()

def on_pushButton_3_clicked(self, Form):

#QtCore.QObject.connect( self.pushButton_3, QtCore.SIGNAL("clicked()"), self, QtCore.SLOT(quit()))

#也可以这样

self.form.close()

def on_pushButton_2_clicked(self):

self.form.close()

Form1 = QtGui.QDialog()

ui = Dialog2()

ui.setupUi(Form1)

Form1.show()

Form1.exec_()

self.form.show()

if __name__ == '__main__':

app = QtGui.QApplication(sys.argv)

Form = QtGui.QWidget()

window = MainWindow()

window.setupUi(Form)

Form.show()

sys.exit(app.exec_())

pass

Dialog1界面的代码如下:

# -*- coding: utf-8 -*-

from PyQt4 import QtCore, QtGui

try:

_fromUtf8 = QtCore.QString.fromUtf8

except AttributeError:

def _fromUtf8(s):

return s

try:

_encoding = QtGui.QApplication.UnicodeUTF8

def _translate(context, text, disambig):

return QtGui.QApplication.translate(context, text, disambig, _encoding)

except AttributeError:

def _translate(context, text, disambig):

return QtGui.QApplication.translate(context, text, disambig)

class Dialog1(QtGui.QWidget):

def setupUi(self, Dialog):

Dialog.setObjectName(_fromUtf8("Dialog"))

Dialog.resize(400, 300)

self.form = Dialog

self.label = QtGui.QLabel(Dialog)

self.label.setGeometry(QtCore.QRect(180, 50, 54, 12))

self.label.setObjectName(_fromUtf8("label"))

self.dialog1_pushButton = QtGui.QPushButton(Dialog)

self.dialog1_pushButton.setGeometry(QtCore.QRect(160, 130, 75, 23))

self.dialog1_pushButton.setObjectName(_fromUtf8("pushButton"))

self.retranslateUi(Dialog)

QtCore.QMetaObject.connectSlotsByName(Dialog)

#信号连接到指定槽

self.dialog1_pushButton.clicked.connect(self.on_dialog1_pushButton_clicked)

def retranslateUi(self, Dialog):

Dialog.setWindowTitle(_translate("Dialog", "Dialog", None))

self.label.setText(_translate("Dialog", "dialog1", None))

self.dialog1_pushButton.setText(_translate("Dialog", "返回主窗体", None))

def on_dialog1_pushButton_clicked(self):

self.form.close()

if __name__ == "__main__":

import sys

app = QtGui.QApplication(sys.argv)

Dialog = QtGui.QDialog()

ui = Dialog1()

ui.setupUi(Dialog)

Dialog.show()

sys.exit(app.exec_())

Dialog2界面的代码如下:

[python] view plain copy

# -*- coding: utf-8 -*-

from PyQt4 import QtCore, QtGui

try:

_fromUtf8 = QtCore.QString.fromUtf8

except AttributeError:

def _fromUtf8(s):

return s

try:

_encoding = QtGui.QApplication.UnicodeUTF8

def _translate(context, text, disambig):

return QtGui.QApplication.translate(context, text, disambig, _encoding)

except AttributeError:

def _translate(context, text, disambig):

return QtGui.QApplication.translate(context, text, disambig)

class Dialog2(object):

def setupUi(self, Dialog):

Dialog.setObjectName(_fromUtf8("Dialog"))

Dialog.resize(400, 300)

self.form = Dialog

self.label = QtGui.QLabel(Dialog)

self.label.setGeometry(QtCore.QRect(180, 60, 54, 12))

self.label.setObjectName(_fromUtf8("label"))

self.pushButton = QtGui.QPushButton(Dialog)

self.pushButton.setGeometry(QtCore.QRect(160, 140, 75, 23))

self.pushButton.setObjectName(_fromUtf8("pushButton"))

self.retranslateUi(Dialog)

QtCore.QMetaObject.connectSlotsByName(Dialog)

#信号连接到指定槽

self.pushButton.clicked.connect(self.on_pushButton_clicked)

def retranslateUi(self, Dialog):

Dialog.setWindowTitle(_translate("Dialog", "Dialog", None))

self.label.setText(_translate("Dialog", "dialog2", None))

self.pushButton.setText(_translate("Dialog", "返回主窗体", None))

def on_pushButton_clicked(self):

self.form .close()

if __name__ == "__main__":

import sys

app = QtGui.QApplication(sys.argv)

Dialog = QtGui.QDialog()

ui = Dialog2()

ui.setupUi(Dialog)

Dialog.show()

sys.exit(app.exec_())

按钮绑定到新弹出界面的处理函数,使用的槽连接方式为:

self.pushButton.clicked.connect(self.on_pushButton_clicked)

如果是Menu项绑定到新弹出界面的处理函数,则应使用的槽连接方式为:

QtCore.QObject.connect(self.set_value_menu, QtCore.SIGNAL(_fromUtf8("triggered()")), self.open_set_value_form)

二者使用的槽处理函数基本一致。若不显示原界面,只需将原界面hide()即可,如:

self.form.hide()

若需在弹出新窗口时同时原窗口保持可见,则不需这一步。且在这种情况下,若要原窗口可选为顶层窗体,则在显示新窗口时应使用show():

Form1.show()

若新窗口为固定的顶层窗体,原窗体被遮盖,则应使用exec_():

Form1.exec_()

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