#!/usr/bin/python2
import sys
from PyQt4 import QtCore, QtGui
class MainWindow(QtGui.QMainWindow):
def __init__(self, *argv):
QtGui.QMainWindow.__init__(self, *argv)
self.createMenu()
self.createComponents()
self.createLayout()
self.createConnects()
def createMenu(self):
self.actionFileOpen = QtGui.QAction(self.tr("Open file..."), self)
self.actionFileSave = QtGui.QAction(self.tr("Save"), self)
self.actionExit = QtGui.QAction(self.tr("Exit"), self)
self.actionExit.setMenuRole(QtGui.QAction.QuitRole)
menuFile = self.menuBar().addMenu(self.tr("File"))
menuFile.addAction(self.actionFileOpen)
menuFile.addAction(self.actionFileSave)
menuFile.addSeparator()
menuFile.addAction(self.actionExit)
def createComponents(self):
self.labelHelloWorld = QtGui.QLabel(self.tr("Hello world!"))
self.buttonUpdate = QtGui.QPushButton(self.tr("Update"))
self.editText = QtGui.QLineEdit()
self.setWindowTitle(self.tr("Hello world"))
def createLayout(self):
widgetCentral = QtGui.QWidget()
layoutCentral = QtGui.QVBoxLayout()
layoutCentral.addWidget(self.labelHelloWorld)
layoutCentral.addWidget(self.editText)
layoutCentral.addWidget(self.buttonUpdate)
widgetCentral.setLayout(layoutCentral)
self.setCentralWidget(widgetCentral)
def createConnects(self):
self.buttonUpdate.clicked.connect(self.updateText)
@QtCore.pyqtSlot()
def updateText(self):
self.labelHelloWorld.setText(self.editText.text())
def main(argv):
app = QtGui.QApplication(argv)
mainwindow = MainWindow()
mainwindow.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main(sys.argv)