PyQT实现多窗口切换
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_()
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持【听图阁-专注于Python设计】。
