Statusbar、Menubar、Toolbar合集

In the last example of this section, we create a menubar, a toolbar and a statusbar. We also create a central widget.

#!/usr/bin/python
# -*- coding: utf-8 -*-

"""
ZetCode PyQt4 tutorial 

This program creates a skeleton of
a classic GUI application with a menubar,
toolbar, statusbar and a central widget. 

author: Jan Bodnar
website: zetcode.com 
last edited: September 2011
"""

import sys
from PyQt4 import QtGui


class Example(QtGui.QMainWindow):
    
    def __init__(self):
        super(Example, self).__init__()
        
        self.initUI()
        
        
    def initUI(self):               
        
        textEdit = QtGui.QTextEdit()
        self.setCentralWidget(textEdit)

        exitAction = QtGui.QAction(QtGui.QIcon('exit24.png'), 'Exit', self)
        exitAction.setShortcut('Ctrl+Q')
        exitAction.setStatusTip('Exit application')
        exitAction.triggered.connect(self.close)

        self.statusBar()

        menubar = self.menuBar()
        fileMenu = menubar.addMenu('&File')
        fileMenu.addAction(exitAction)

        toolbar = self.addToolBar('Exit')
        toolbar.addAction(exitAction)
        
        self.setGeometry(300, 300, 350, 250)
        self.setWindowTitle('Main window')    
        self.show()
        
        
def main():
    
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()    

This code example creates a skeleton of a classic GUI application with a menubar, toolbar, and a statusbar.

textEdit = QtGui.QTextEdit()
self.setCentralWidget(textEdit)

Here we create a text edit widget. We set it to be the central widget of the QtGui.QMainWindow. The central widget occupies all space that is left.

Figure: MainWindow