Hi --
I have two questions about popup menus. I've attached a small
program that displays a TextView and brings up a popup menu when a
mouse button is clicked on it.
Question 1: If I want to rebuild the Menu each time the button is
clicked, and destroy it when I'm done with it, when am I supposed to
call popupmenu.destroy()? The FAQ says to do it in the 'deactivate'
callback (http://faq.pygtk.org/index.py?req=show&file=faq11.002.htp),
but if I do that, then the MenuItems are destroyed before their
'activate' signals are emitted, which makes them more or less
useless. Is the FAQ wrong, or am I missing something?
Question 2: If I *don't* destroy the Menu, then keypresses (not mouse
button presses) in the TreeView cause the 'deactivate' and 'cancel'
signals to be emitted from the Menu. This occurs on a Macbook Pro
and a PowerBook G4 with pygtk 2.6.10, but not on Linux machines with
pygtk 2.6.4 or 2.10.x. Is this a Mac bug? A pygtk 2.6 bug? Or am I
doing something wrong again?
Here's my test code. Any insight will be appreciated.
Thanks.
-- Steve
import pygtk
pygtk.require('2.0')
import gtk
import gobject
def deactivate(menu):
print "deactivate"
## menu.destroy() # This line prevents the 'activate' callback
from being called!
def cancel(menu):
print "cancel"
def activate(menuitem, itemname):
print "activate", itemname
def popup(button, event):
#global popupmenu
popupmenu = gtk.Menu()
popupmenu.set_screen(window.get_screen())
popupmenu.connect('deactivate', deactivate)
popupmenu.connect('cancel', cancel)
for itemname in ("one", "two", "three"):
menuitem = gtk.MenuItem(itemname)
menuitem.connect('activate', activate, itemname)
popupmenu.append(menuitem)
popupmenu.show_all()
popupmenu.popup(None, None, None, event.button, event.time)
return True
if __name__ == '__main__':
global window
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.connect('delete-event', gtk.main_quit)
liststore = gtk.ListStore(gobject.TYPE_STRING)
liststore.append(["hello"])
liststore.append(["world"])
treeview = gtk.TreeView(liststore)
col = gtk.TreeViewColumn("header")
cell = gtk.CellRendererText()
col.pack_start(cell, True)
col.add_attribute(cell, 'text', 0)
treeview.append_column(col)
window.add(treeview)
treeview.connect('button-press-event', popup)
window.show_all()
gtk.main()
--
-- EMail: [EMAIL PROTECTED] Phone: (301)
975-5423 --
-- WWW: http://math.nist.gov/mcsd/Staff/SLanger/ Fax: (301)
975-3553 --
-- Mail: NIST; 100 Bureau Drive -- Stop 8910; Gaithersburg, Md
20899-8910 --
-- "I don't think this will work. That's why it's
science." --
-- Naomi Langer (age 6), 17 Feb
2003 --
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