def __init__(self, parent=None):
super(MainWidget, self).__init__(parent)
# get controller
self.installController = InstallController(self)
self.howToController = HowToController(self)
self.helpController = HelpController(self)
self.homeController = HomeController(self)
self.completeController = CompleteController(self)
self.setFixedSize(860, 600)
self.stack = QStackedWidget()
layout = QVBoxLayout(self)
layout.addWidget(self.stack)
self.homeWidget = Ui_homeWidget(self)
self.installWidget = Ui_installWidget(self)
self.completeWidget = Ui_completeWidget(self)
self.howToWidget = Ui_howToWidget(self)
self.helpWidget = Ui_helpWidget(self)
self.stack.addWidget(self.homeWidget)
self.stack.addWidget(self.installWidget)
self.stack.addWidget(self.completeWidget)
self.stack.addWidget(self.howToWidget)
self.stack.addWidget(self.helpWidget)
self.stack.setCurrentWidget(self.homeWidget)
self.setSignalAndSlot()
