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PyGTK Context Menu Problem
December 30th, 2006 by 
Administrator
Somebody posted in the Pygtk mailing list and said he found a bug on the context menu of pygtk. The test code really confirms the alleged bug but someone also replied that that particular problem didn't occur when he test the code.
.
Below is the problem:
When creating a context menu with a submenu, the submenu doesn't get focus until the menu item it's attached to is clicked (even though the submenu appears when the mouse is over the menu item.)
The upshot is that items in the sub menu don't emit the activate signal unless the parent menu item is clicked first.
Here is some test code demonstrating this problem:
pygtk.require('2.0')
import gtk
class bugtest:
def hello(self, widget, data=None):
print "hello"
return False
def contextMenu(self, widget, event, data=None):
menu = gtk.Menu()
one = gtk.MenuItem("One")
menu.append(one)
submenu = gtk.Menu()
two = gtk.MenuItem("Two")
two.connect("activate", self.hello)
submenu.append(two)
one.set_submenu(submenu)
three = gtk.MenuItem("Three")
three.connect("activate", self.hello)
menu.append(three)
menu.show_all()
menu.popup(None, None, None, event.button, event.get_time())
return True
def __init__(self):
win = gtk.Window()
label = gtk.Label('Submenu bug test')
evbox = gtk.EventBox()
evbox.add(label)
win.add(evbox)
win.resize(200,200)
evbox.connect('button-release-event', self.contextMenu)
win.show_all()
def main(self):
gtk.main()
if __name__ == "__main__":
a = bugtest()
a.main()
My proposed workaround on that particular problem is that i've just changed that "activate" signal to "button-press-event" signal.
two = gtk.MenuItem("Two")
two.connect("button-press-event", self.hello)
submenu.append(two)
one.set_submenu(submenu)
Posted in Python | 
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