#  HelloQt.py   (c) Kari Laitinen

#  http://www.naturalprogramming.com

#  2009-11-02  First program version created.
#  2009-11-03  Last modification.

#  This program draws two lines of text onto the screen.

#!/usr/bin/python


import sys
from PyQt4 import QtGui, QtCore

#  We'll derive our application window from QtGui.QWidget.
#  Qt documentation says that a widget without a parent widget
#  is always an independent window (top-level widget).


class HelloWindow( QtGui.QWidget ) :

   def __init__(self, parent=None ) :
   
      QtGui.QWidget.__init__( self, parent )

      self.setGeometry( 300, 300, 400, 250 )
 
      self.setWindowTitle( "THIS IS A SIMPLE PyQt APPLICATION" )


   def paintEvent( self, event ) :
   
      painter = QtGui.QPainter()
      painter.begin( self )
      
      painter.drawText( 80, 100, "Hello. I am a PyQt Application." )
      
      painter.drawText( 80, 150, "The coordinates of this line are (80,150)." )

      painter.end()

this_application = QtGui.QApplication( sys.argv )

application_window = HelloWindow()
application_window.show()
this_application.exec_()

#  NOTES:

#  A nice PyQt tutorial can be found at http://zetcode.com/tutorials/pyqt4/

#  PyQt class reference can be found at
#  http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/classes.html

#  PyQt INSTALLATION IN WINDOWS:

#  First you need the basic Python installation.

#  Then you need a corresponding binary for PyQt from
#    http://www.riverbankcomputing.co.uk/software/pyqt/download
#  When you execute the .exe file, it installs PyQt to the
#  same folder in which the basic Python was installed.

#  After this you can run PyQt applications simply by commanding
#  in the following way:
#    \Python26\python HelloQt.py