Hello All,
I am trying to create a singleton window in pygtk and for the life of me
can't seem to figure out a better way to go about doing this. The way I'm
doing it now is to recreate the window and show it. Example code is below. I
would much appreciate any assistance in this matter. I've googled to no
avail. I'm hiding the child window because when I execute main_quit on the
child it kills parent (which makes sense).
My singleton hack works, but its cluncky, I am wondering if theres some
other way(working shmingleton?).
My question is this. How to create a singleton child window without hiding
old childs(seeing as this creates many hidden childs after a while) or how
to hide it and when showing it again also have it display all contents in
the child window?
Thank you.
#!/usr/bin/env python
import os, sys
import pygtk
pygtk.require('2.0')
try:
import gtk
except:
print >> sys.stderr, "You need to install the python gtk bindings"
sys.exit(1)
class Singleton_Test(object):
def __init__(self):
self.root_window = gtk.Window( type=gtk.WINDOW_TOPLEVEL )
self.root_window.set_title("Singleton Test")
self.root_window.connect("delete_event", lambda w,e: gtk.main_quit())
self.vbox = gtk.VBox(False,0)
self.root_window.add(self.vbox)
self.vbox.show()
self.singleton_button = gtk.Button("SINGLETON")
self.singleton_button.connect("clicked",self.singleton_cb)
self.vbox.pack_start(self.singleton_button,False,False,0)
self.singleton_button.show()
self.shmingleton_button = gtk.Button("SHMINGLETON")
self.shmingleton_button.connect("clicked",self.shmingleton_cb)
self.vbox.pack_start(self.shmingleton_button,False,False,0)
self.shmingleton_button.show()
self.create_singleton_child_window()
self.root_window.show()
singleton_window_count=0
def singleton_cb(self,w):
if self.singleton_window_count>0:
self.create_singleton_child_window()
self.singleton_child_window.show()
print "singleton child window count is ",self.singleton_window_count
self.singleton_window_count+=1
def shmingleton_cb(self,w):
self.singleton_child_window.show_all() #doesn't work as expected,
neither does show
def create_singleton_child_window(self):
self.singleton_child_window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.singleton_child_window.set_title("SINGLETON child")
#only hiding since gtk.main_quit kills parent, any better way?
self.singleton_child_window.connect("destroy", lambda w:
self.singleton_child_window.hide())
self.singleton_child_window.connect("delete_event", lambda w,e:
self.singleton_child_window.hide())
self.vbox = gtk.VBox(False, 0)
self.singleton_child_window.add(self.vbox)
self.vbox.show()
self.label = gtk.Label("SINGLETON")
self.vbox.pack_start(self.label,False,False,0)
self.label.show()
def main(self):
gtk.main()
if __name__ == "__main__":
singleton = Singleton_Test()
singleton.main()
-Alex Goretoy
http://www.goretoy.com
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