import sys
from PyQt5.QtWidgets import QMainWindow, QTextEdit, QAction, QApplication
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import Qt

class Example(QMainWindow):

  def __init__(self):
    super().__init__()
    self.initUI()
  def initUI(self):
    textEdit = QTextEdit()
    self.setCentralWidget(textEdit)

    exitAction = QAction(QIcon('images/exit.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.setToolButtonStyle(Qt.ToolButtonTextUnderIcon) # 文字图片垂直排列
    toolbar.setToolButtonStyle(Qt.ToolButtonTextBesideIcon) # 文字图片水平排列
    toolbar.addAction(exitAction)

    self.setGeometry(300, 300, 350, 250)
    self.setWindowTitle('Main window')

    self.show()


if __name__ == '__main__':
  app = QApplication(sys.argv)
  ex = Example()
  sys.exit(app.exec_())