python图形化界面开发-python图形化界面开发学习(1)

fromPyQt5.QtWidgets import QApplication,QMainWindow,QActionfromPyQt5.QtGui import QIcon

import sysclass GUI(QMainWindow):#inherit fromQMainwindow

def __init__(self):

super().__init__()#initialize superclass,which creates the window

self.initGUI() #refer to windowasself

def initGUI(self):#add widgets and change properties

self.setWindowTitle("这不是周")#refer to window asself

self.resize(400,400) #resize(width,height)

self.add_menu_and_status()

def add_menu_and_status(self):

self.statusBar().showMessage("状态栏内容")

menubar=self.menuBar() #create menu bar

file_menu=menubar.addMenu("文件") #add menu to menu bar

new_icon=QIcon("file.png") #create icon

new_action=QAction(new_icon,"创建",self) #crteate an Action

new_action.setStatusTip("创建新文件")#statusbar pdated

file_menu.addAction(new_action) # add Action to menu

file_menu.addSeparator() #add separator line between menu

exit_icon= QIcon("exit.png") # create icon

exit_action= QAction(exit_icon, "退出", self) # crteate an Action

exit_action.setStatusTip("点击退出系统") # statusbar pdated

exit_action.triggered.connect(self.close)#close application when clicked

exit_action.setShortcut("Ctrl+Q") #keyboard shortcut to close application

file_menu.addAction(exit_action) # add Action to menu

#-------------------------------------edit_menu=menubar.addMenu("编辑")#add second menu to menu bar

self.resize(400,400)if __name__=="__main__":

app=QApplication(sys.argv) #create Application

gui=GUI() #create instance of classgui.show()#show the constructed Qt window

sys.exit(app.exec_())#execute the application

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