Hello World
#!/usr/bin/env python
#
# [SNIPPET_NAME: Hello World]
# [SNIPPET_CATEGORIES: PyQt4]
# [SNIPPET_DESCRIPTION: A simple hello world program]
# [SNIPPET_AUTHOR: Darren Worrall <[email protected]>]
# [SNIPPET_LICENSE: GPL]
# example helloworld.py
import sys
from PyQt4 import QtGui, QtCore
class HelloWorld(QtGui.QWidget):
"""
An example hello world application
"""
def __init__(self):
# create GUI
QtGui.QMainWindow.__init__(self)
self.setWindowTitle('Hello world!')
# Set the window dimensions
self.resize(200,50)
# vertical layout for widgets
self.vbox = QtGui.QVBoxLayout()
self.setLayout(self.vbox)
# Create a push button labelled 'Hello world' and add it to our layout
btn = QtGui.QPushButton('Hello world!', self)
self.vbox.addWidget(btn)
# Connect the clicked signal to the hello handler
self.connect(btn, QtCore.SIGNAL('clicked()'), self.hello)
def hello(self):
"""
Handler called when hello world is clicked
"""
print 'Hello world!'
# If the program is run directly or passed as an argument to the python
# interpreter then create a HelloWorld instance and show it
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
gui = HelloWorld()
gui.show()
app.exec_()