GUI using Pygtk and glade - pygtk

Question

i am trying to build a GUI using pygtk and glade on Windows. I am a noob at python GUI building so please excuse my noobness. I Looked up this tutorial and did exactly as it said. The only difference was that I am on Windows 7 Home Premium x64 .
I put a Label and a button in a window using glade as in the tutorial and then i got a libglade xml file. Then i typed the following code
import sys
import pygtk
import gtk
import gtk.glade
pygtk.require("2.0")
class HellowWorldGTK:
def __init__(self):
#Set the Glade file
self.gladefile = "Hello_World.glade"
self.wTree = gtk.glade.XML(self.gladefile)
#Get the Main Window, and connect the "destroy" event
self.window = self.wTree.get_widget("MainWindow")
if (self.window):
self.window.connect("destroy", gtk.main_quit)
if __name__ == "__main__":
hwg = HellowWorldGTK()
gtk.main()
I put both the files in the same folder and then i run a python interpreter from the command line into the folder.Apparently The program runs but the thing is that i'm unable to get the interface all i get on the command line is that that the Program is running. I dont even get an error or something.Is it due to the fact that i'm on Windows?? I thought that GTK was cross-platform and the same code should run on windows as well as on Linux??
Also here is the .glade file generated by GLADE GUI designer
<?xml version="1.0" encoding="UTF-8"?>
<glade-interface>
<!-- interface-requires gtk+ 2.24 -->
<!-- interface-naming-policy project-wide -->
<widget class="GtkWindow" id="Hello world!">
<property name="can_focus">False</property>
<property name="resizable">False</property>
<child>
<widget class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<widget class="GtkLabel" id="Click Here!">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">label</property>
</widget>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<widget class="GtkButton" id="Please Click on the Button!">
<property name="label" translatable="yes">button</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_action_appearance">False</property>
</widget>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</widget>
</child>
</widget>
</glade-interface>

Answer 1

self.window.show()
At the end of __init__ should do it I think.
EDIT AFTER COMMENT...
self.window = self.wTree.get_widget("MainWindow")
but there is no window called "MainWindow", I think you've called your window "Hello world!", try loading that instead (or renaming your window in glade).
It may be a good idea to check that your window is actially found in the glade file as well.
window_name="Hello World!"
self.window = self.wTree.get_widget(window_name)
if (self.window):
self.window.connect("destroy", gtk.main_quit)
else:
raise Exception("I couldn't find the window called "+window_name+"!")